Here, Reddit and I guess the Tera forums, though I have no idea why I still browse there since I stopped playing well over a year ago. I think I just like the drama and to see any new content.
Twitter is probably my top 1, followed by Facebook and Youtube (though I don't YT frequently when my internet is bad aaa). Became inactive on Tumblr for quite some time bc my laptop couldn't load Tumblr quickly (I think it uses up a lot of data?), but I'm occasionally on there nowadays.
I spend so much time on tumblr and YouTube! Less time on Facebook, it's really only a communication tool, since my school uses it a lot to spread event information.