getdare mostly contains teenage dares and topics about, most are just inocent dares for 14-16yo. But also kept some adult sections. I noticed getdare was one of the best forums because it managed to allow more or less sexual ideas for everyone - somehow this age mix is very risky in my opinion. But the forum resisted for years which is an incredible job for the admins!
I suppose (I don't quite remember) this was the reason kinktalk started (at least when kinktalk started it was specifically for 18+)
We shouldn't mix up these forums. Actually this was my reason I asked to have my account banned on getdare, I wanted to avoid chatting to underage people (I mostly seek people around my age or older). I suggest people above 18 try to put more life into kinktalk which is somehow silent compared to getdare.