I saw that it wanted me to sign up before I could try it out, and clicked the back button. I have no idea if your service is a good one or not, I guess I never will.

And facebook integration? Seriously I think it is quickly becoming the obvious sign of a douchey website. Not saying that facebook integration isn't a useful feature in some sites, but nowadays when I see a site and it has a whole row of social network integration buttons it just looks desperate and exploitative, like the site cares more about using the audience to gain traction than to provide a good service.