SpiralFrog, a free music download service, is due to be launched this December. The interesting part is that they believe they can support their venture by advertising alone, and by the fact that they have signed up with Universal Music Group, must mean that the numbers sound good!

The deal is that music and video downloads are free to use for 6 months from the download. The catch is that before the download starts, the user has to watch 90 seconds of advertising.

90 seconds is a long time to be forced to wait for a download to start for each song/video … how many people will just set it going and walk away? Mind you, it’s a novel concept that I’m pretty sure will see them become a popular site … everyone loves “free”!