I like detail like a lot of people but I'm not too picky with that. Mostly I love it when people have their characters share a lot about themselves in their posts. Not really through dialogue, but thoughts. I'm more for writing thoughts myself rather than physical description, and I like it when others do that too.

I also love it when people crash in RPs in interesting ways. That can be annoying at times, but often hilarious. I usually love it when people randomly join in and make it a big entrance in the conversation.