This is casual, but there's no hard max on paragraphs. If they want to post ten to twenty paras, they can be my guest. I'm just getting back into this stuff now (had about three or four years of RP experience on and off prior), so I'm trying to stick to about five paragraphs for now. Just like there's no maximum though, you aren't required to post as much as anyone else so long as you're above casual's suggested minimum. Eventually I'll be posting more, as well.