On mobile, Reddit shares your mobile unique advertising identifier, IP address, and a list of subreddits with advertisers, so they can send out targeted advertising. But, now Reddit gives users to option to opt out. The company details how to opt out for Android and iOS users in a detailed post here.
Reddit also got a little more specific about what it does with the data it collects from desktop users. Like on mobile, the site logs information about the browser you use, your operating system, and your IP address. However, Reddit says it will delete all that information from its servers every 90 days — except the IP address you used to create your Reddit account. Same goes for any personally identifiable information the site collects. But your subscriptions, preferred language, all languages you view content in, karma, voting data, and date of last login will all be saved.
Reddit is specific not just about what it will track about you, but how. Reddit says it only uses a select set of cookies to track user behavior (nothing new), but it also uses pixel trackers — little images embedded in a webpage. Reddit says the data related to pixel tracking is only shared internally. In fact, most of the tracking is meant to help the Reddit team improve the user experience over time. But advertisers can still set their own cookies for desktop users.
To that effect Reddit noted in its post that it wants to start providing a transparency report annually for its users.
It’s also worth checking out the new user agreement, which has updated information on content pulldowns related to copyright or trademarked material, and how you can file a counter claim.