These and Instagram seem to be the main locii of conversation for a topic I’m interested in. Instagram is a no because Meta. Just trying to keep myself off of the big data mining sites and search results are a bit of a hot mess.
Edit: Please, no more splaining how there isn’t any privacy on the net. There’s what can be scraped, what can be gathered from cookies (which I’m as careful as I can be about), and there’s what we make it easy for corporations to collect by using their products. I’m asking about the latter for Discord and Tumblr. It’s not that I’m unaware of the general problem (otherwise I wouldn’t be asking), it’s just that I’m out of the loop on specifics for these sites.
I believe Discord is quite prolific for surveillance and data mining, but that’s just what I’ve heard. Tumblr, I’m not sure how they could really spy on you unless you’re using an app. If you’re using it exclusively through a web browser, as long as you have privacy browser extensions and/or are using a browser that enables privacy features by default then you’re probably pretty safe.
Discord does not take any information from your PC other than what you input directly into the app. There has been confusion in the past because it’s game detection would scan your file system for known games, but it wouldn’t send that data anywhere and was only using it to detect when you were playing a game in order to update your status. As far as surveillance goes, I’ve not seen any evidence that they make profiles of individual users to sell to advertising firms, but I do believe that they track general trends inside of public community servers and use that information for something. They also integrate with a lot of 3rd parties such as OpenAI which may be doing something with the data they’re given. They do seem to genuinely delete messages if they are deleted, which is a plus.