I love people that have such a solid grasp on their character that I can 'hear' the VAs/actor's voice when I read their reply. I love the writers that really plunge into the depth of their character. I love people that bring new twists or advances to a thread and don't just either expect me to carry it all or going through a routine. I do like descriptions, so tell me what they're thinking, how they're standing, what the area they're in is like in little bits and pieces woven through the action and dialogue. Put some flavor into the setting. Basically just make it interesting for me, give me things to work with, write like we're writing a story, not a scene. I love a writer that's so good I feel challenged to be put effort into answering but I'll honesty eat up anything that someone gives me that keeps me looking forward to the next reply by keeping things interesting.

tl;dr give me tags that are interactive/interesting and I'm there