I like the copy on your homepage. Last year I built a prototype of a similar service and used it for a couple of months with friends, but it turned out that not having immediate feedback takes a lot of fun out of sharing. Posting a link to Skype and having a conversation about it in real time feels much more rewarding. It's something psychological, hard to explain.

Having said that, I still want to explore this idea some time in the future and see how it works out.

You might want to check out a similar service created by other HN user: http://www.yourpane.com/