I personally retain and can see no identifying information from your visit unless you use the contact form or post a comment, in which case your IP address is logged, along with the time you used the contact form or posted a comment, as well as whatever information you entered.
However, I use some third-party services, plugins, or add-ons:
Google Adsense
Google Adsense uses cookies to serve ads based on your prior visits to this website. Use of these advertising cookies enables Google and its partners to serve ads based on your history of visits on the internet. It is possible to opt out of use of these advertising cookies for interest-based advertising by visiting aboutads.info.
Jetpack
Contact Form
Data Used: If Akismet is enabled on the site, the contact form submission data — IP address, user agent, name, email address, website, and message — is submitted to the Akismet service (also owned by Automattic) for the sole purpose of spam checking. The actual submission data is stored in the database of the site on which it was submitted and is emailed directly to the owner of the form (i.e. the site author who published the page on which the contact form resides). This email will include the submitter’s IP address, timestamp, name, email address, website, and message.
Data Synced (?): Post and post meta data associated with a user’s contact form submission. If Akismet is enabled on the site, the IP address and user agent originally submitted with the comment are synced, as well, as they are stored in post meta.
GIF Block
Data Used: An iframe is inserted into the page, using an HTTP connection. The iframe is governed by Giphy’s privacy policy.
Activity Tracked: We don’t track any activity. For details of what Giphy tracks, refer to their privacy policy.
Infinite Scroll
Data Used: In order to record page views via Jetpack Stats (which must be enabled for page view tracking here to work) with additional loads, the following information is used: IP address, WordPress.com user ID (if logged in), WordPress.com username (if logged in), user agent, visiting URL, referring URL, timestamp of event, browser language, country code.
Activity Tracked: Page views will be tracked with each additional load (i.e. when you scroll down to the bottom of the page and a new set of posts loads automatically). If the site owner has enabled Google Analytics to work with this feature, a page view event will also be sent to the appropriate Google Analytics account with each additional load.
Jetpack Comments
Data Used: Commenter’s name, email address, and site URL (if provided via the comment form), timestamp, and IP address. Additionally, a jetpack.wordpress.com IFrame receives the following data: WordPress.com blog ID attached to the site, ID of the post on which the comment is being submitted, commenter’s local user ID (if available), commenter’s local username (if available), commenter’s site URL (if available), MD5 hash of the commenter’s email address (if available), and the comment content. If Akismet (also owned by Automattic) is enabled on the site, the following information is sent to the service for the sole purpose of spam checking: commenter’s name, email address, site URL, IP address, and user agent.
Activity Tracked: The comment author’s name, email address, and site URL (if provided during the comment submission) are stored in cookies. Learn more about these cookies.
Data Synced (?): All data and metadata (see above) associated with comments. This includes the status of the comment and, if Akismet is enabled on the site, whether or not it was classified as spam by Akismet.
Latest Instagram Posts Block
Data Used: The images are loaded into the post content with an API request in PHP.
Likes
This feature is only accessible to users logged in to WordPress.com.
Data Used: In order to process a post like action, the following information is used: IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID (on which the post was liked), post ID (of the post that was liked), user agent, timestamp of event, browser language, country code.
Activity Tracked: Post likes.
Map Block
Activity Tracked: We don’t track anything. Refer to the Mapbox privacy policy for details of any activity they track.
Mobile Theme
Data Used: A visitor’s preference on viewing the mobile version of a site.
Activity Tracked: A cookie (akm_mobile) is stored for 3.5 days to remember whether or not a visitor of the site wishes to view its mobile version. Learn more about this cookie.
Notifications
This feature is only accessible to registered users of the site who are logged in to WordPress.com.
Data Used: IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID and URL, Jetpack version, user agent, visiting URL, referring URL, timestamp of event, browser language, country code. Some visitor-related information or activity may be sent to the site owner via this feature. This may include: email address, WordPress.com username, site URL, email address, comment content, follow actions, etc.
Activity Tracked: Sending notifications (i.e. when we send a notification to a particular user), opening notifications (i.e. when a user opens a notification that they receive), performing an action from within the notification panel (e.g. liking a comment or marking a comment as spam), and clicking on any link from within the notification panel/interface.
Brute Force Attack Protection
Data Used: In order to check login activity and potentially block fraudulent attempts, the following information is used: attempting user’s IP address, attempting user’s email address/username (i.e. according to the value they were attempting to use during the login process), and all IP-related HTTP headers attached to the attempting user.
Activity Tracked: Failed login attempts (these include IP address and user agent). We also set a cookie (jpp_math_pass) for 1 day to remember if/when a user has successfully completed a math captcha to prove that they’re a real human. Learn more about this cookie.
Data Synced (?): Failed login attempts, which contain the user’s IP address, attempted username or email address, and user agent information.
Repeat Visitor Block
Data Used:The Repeat Visitor block records page views by setting a cookie named `jp-visit-counter` in the visitor’s browser, which is incremented on each visit. This cookie is stored only in the browser and not recorded in our databases.
Sharing
Data Used: When official sharing buttons are active on the site, each button loads content directly from its service in order to display the button as well as information and tools for the sharing party. As a result, each service can in turn collect information about the sharing party. When a non-official Facebook or a Pinterest sharing button is active on the site, information such as the sharing party’s IP address as well as the page URL will be available for each service, so sharing counts can be displayed next to the button. When sharing content via email (this option is only available if Akismet is active on the site), the following information is used: sharing party’s name and email address (if the user is logged in, this information will be pulled directly from their account), IP address (for spam checking), user agent (for spam checking), and email body/content. This content will be sent to Akismet (also owned by Automattic) so that a spam check can be performed. Additionally, if reCAPTCHA (by Google) is enabled by the site owner, the sharing party’s IP address will be shared with that service. You can find Google’s privacy policy here.
Subscriptions
Data Used: To initiate and process subscriptions, the following information is used: subscriber’s email address and the ID of the post or comment (depending on the specific subscription being processed). In the event of a new subscription being initiated, we also collect some basic server data, including all of the subscribing user’s HTTP request headers, the IP address from which the subscribing user is viewing the page, and the URI which was given in order to access the page (REQUEST_URI and DOCUMENT_URI). This server data used for the exclusive purpose of monitoring and preventing abuse and spam.
Activity Tracked: Functionality cookies are set for a duration of 347 days to remember a visitor’s blog and post subscription choices if, in fact, they have an active subscription.
WhatsApp Button Block
Activity Tracked: We don’t track any activity. For details of what WhatsApp tracks, refer to their Privacy Policy.
WordPress.com Secure Sign On
This feature is only accessible to registered users of the site with WordPress.com accounts.
Data Used: User ID (local site and WordPress.com), role (e.g. administrator), email address, username and display name. Additionally, for activity tracking (see below): IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID and URL, Jetpack version, user agent, visiting URL, referring URL, timestamp of event, browser language, country code.
Activity Tracked: The following usage events are recorded: starting the login process, completing the login process, failing the login process, successfully being redirected after login, and failing to be redirected after login. Several functionality cookies are also set, and these are detailed explicitly in our Cookie documentation.
Data Synced (?): The user ID and role of any user who successfully signed in via this feature.
Jetpack Stats
Data Used: IP address, WordPress.com user ID (if logged in), WordPress.com username (if logged in), user agent, visiting URL, referring URL, timestamp of event, browser language, country code. Important: The site owner does not have access to any of this information via this feature. For example, a site owner can see that a specific post has 285 views, but he/she cannot see which specific users/accounts viewed that post. Stats logs — containing visitor IP addresses and WordPress.com usernames (if available) — are retained by Automattic for 28 days and are used for the sole purpose of powering this feature.
Activity Tracked: Post and page views, video plays (if videos are hosted by WordPress.com), outbound link clicks, referring URLs and search engine terms, and country. When this feature is enabled, Jetpack also tracks performance on each page load that includes the JavaScript file used for tracking stats. This is exclusively for aggregate performance tracking across Jetpack sites in order to make sure that our plugin and code is not causing performance issues. This includes the tracking of page load times and resource loading duration (image files, JavaScript files, CSS files, etc.). The site owner has the ability to force this feature to honor DNT settings of visitors. By default, DNT is currently not honored.
WordPress.com Toolbar
This feature is only accessible to registered users of the site who are also logged in to WordPress.com.
Data Used: Gravatar image URL of the logged-in user in order to display it in the toolbar and the WordPress.com user ID of the logged-in user. Additionally, for activity tracking (detailed below): IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID and URL, Jetpack version, user agent, visiting URL, referring URL, timestamp of event, browser language, country code.
Activity Tracked: Click actions within the toolbar.