I am using Live2support's live chat software on my blackberry device to connect with my website visitors. Its an chat application for business use only, not for chit chat with friends.
It's true that all chat rooms have people who try to troll or creep but if you find something that has a good security system you can keep all of that to a minimum by reporting users etc. I've had some really intelligent conversations VIZ chat rooms and forums. Also theirs almost always options in chat forums to talk to a specific user or group of users. General Chat is the only place you have people TyPiNg LyK ******* and making porn out of non-alphabetical symbols...
As far as gaming goes, I usually stick to 4chan.org or talking to other gamers over chat on online games..
There is a lesson in this- No matter where you go in life, there will always be pervs, lesters, and trolls... It's your choice whether or not you want to let those people ruin your GOD GIVEN NERD TIME !