You can generally tell by seaking out a discussion thread and seeing how many people are participating, sometimes these get lost though, and all you can do is read and jot down how many people are posting. This can be fun, it lets you see others writing styles and get a feel for how an author thinks.
As far as the naughty goes....I tend to see larger roleplays remaining smut free, course, maybe I'm reading the wrong roleplays! 😉 I am not sure why, but as i suggested i think its alot to do with comfort level of the person or people you are posting with.
Thats what it really comes down to as far as the success of a good roleplays is concerned, that 'at home' element. Short of coaxing my wife into writing a roleplay I'd have a hard time doing a romantic scene myself, due to my own insecurities and awkwardness, whatever...in a person plus two environment. I often find the best roleplays are seasoned writers with a long standing history or at least knowledge of one another.
Fanfics are a different, more simple, but just as elegant animal. (if your reading a good writer)
Me, myself and I could get a pretty racey 3 way going, I'm at home writing by myself with nearly anything, but around here things are very well structured and almost narrated like a script, read one you'll see. Plus there are few individual works.
I do like this script form i see here for roleplays though, but it is outside my element. In time I'd like to join one when i am free of the fear of screwing it up.
Roleplays are often better than fan fiction in my experiences because they include so much outward input and inward thought, not that fanficts do not; I just find the characters can usaully be more multidimensional and unique when they each are the role of a different writer. Roleplays more closely mimick the round robin I imagine seson writers went through, with ideas, staying in character, etc. etc.
Then again, I'm no expert. This is just my opinion and it could change.
Who knows?
At any rate, read the stuff here at the BB; from what little I've read, I wish I had the time to read more!
Sorry for the blathering, I love writing! 🙂
Very gifted writers....Palabra Vamp. had me in awe...then i read the next post by another BB author...got awed again. (then got very shy about my writing chops!)
If there ever was a place to try it and get your feet wet, I'd wager you've found it. You can learn from some gifted writers about the topic you love; not to mention people seem pretty friendly around here.
🙂