While role-playing, I have a more petite, formal style, whereas my OoC can range from who I talk to at the moment.
In Local, I use more of a formal usage of words, but with friends I get a little loose with my typing, becoming lazy if you will. One second I'll be typing like "Yeah, I guess so.))" to "no i dont really))" within seconds, but it just really depends on who I'm talking to.
I don't exactly have a "style," if I may, but if a petite, careful typing counts, then i suppose that'd be my style.
I just type how I talk, really. It's serious around other people but goofy around my friends.
-Wolfie