This sounds pretty cool. I like the idea of having instant feedback shown to you while you're playing a song.

I've always wanted to pick up the guitar. Maybe this will give me a reason to buy a cheap starter guitar and actually give it a shot.

Too bad the site is a bit light on info.

FWIW, even if this turns out to be nothing, it's quite well possible to get very good guitar lessons online. I started playing again after some years of absence and I'm positively happy with the quality of some of the material.

Try out JamStar. the ONLY working guitar app in the browser. Grab your guitar (any guitar), using your line-in/mic. You can play any song in the catalog, import your own guitar pro..and get realtime feedback! http://JamStar.co