I always left my chat open and accepted anyone's request, so I'll admit that I pretty much left myself wide open for that kind of thing. I'd say about 3 out of 5 times, the other person would inevitably bring up something sexual or just start being inappropriate from the get-go. I did have a lot of pleasant chats, but I also had a ton of people message me just to say stuff like "i'm sitting in a very messy diaper right now, mmmmmm it's so warm and squishy" and that's not my idea of good conversation. I never had an issue with RPers, though, they were always polite enough to ask up front if I RPed, and when I said "no", they either went somewhere else or they stayed for a casual, non-sexual chat.
The DD boards, though, for me, were generally a lot more exhibitionist and fetishistic, in the sense that you could tell that many posts were typed with only one hand on the keyboard. ADISC is a LOT more of a social community, I've had many actual, civil back-and-forth discussions here about topics other than diapers that I just did not get that from DD, which is why I left.
I wouldn't at all say that DD is bad or toxic, but it's definitely not the same kind of vibe as ADISC. I feel like ADISC is more of a structured community hang-out, whereas DD always felt more impersonal and casual. That's my experience, at least.
