Couchsurfing had a in-advance travel feature like this. Pretty useful, I've used it a few times to find people to link up with or surf at. They also had a Hango

Couchsurfing had a in-advance travel feature like this. Pretty useful, I've used it a few times to find people to link up with or surf at. They also had a Hangouts thing where you could just link up in realtime. Couchsurfing was freaking awesome. But then they messed stuff up, tried too hard to monetize, and also a bunch of weird bobs nd vagene guys came on. Smh...