Twitter stresses me out too much, because everything is so real-time, and if you miss a conversation or something, you just miss it. On LJ, if you don't have time to respond to a comment, or want to think first, it's okay to wait. But yeah, I really feel the same way about tumblr. It also is a really easy way to steal things by reblogging parts of translations or out-of-context images without any credit or linking back to the original. I feel like actually, when a few lines of a translation get reblogged, sometimes people who don't speak Japanese and don't really understand the situation get the wrong idea, and then things get complicated. And I definitely agree that it's much easier to get to know someone on LJ, especially when a lot of people on tumblr use tumblr to get out of any accountability for their actions.