I came to know about this website while watching 'click' on bbc. I must say that the concept is  awesome. This is what you get when you design a product using a user-interface centric approach. This will be the next big thing - If it isn't already. Basically they have removed all the bottlenecks and hassles associated with other such websites.

But it seems that it is still in its infancy and the whole concept can at best be described as a beta version. Not too long ago i was putting some videos and all my videos and the associated text disappeared! Hopefully i will have better luck next time.