Well, it looks like the freemium model of selling software is working quite well in the industry, as Bram Cohen's very popular BitTorrent application, uTorrent, has just adopted this model. Known for being fast, efficient and light on system resources, it has now gained a few pounds, sorry features in version 3, some of which are available only for a subscription of $24.95 per year. These include things like an antivirus scanner powered by BitDefender, a media player and integrated support for converting popular video file types such as MPEG4, H.264, Theora, and VP8, as well as MP3, AAC and AC-3 audio files. The media player is interesting, in that it allows playback of videos that are still downloading. Note that this feature is also available in the free version.

For those that still want to hang on to the lean and mean free version, it's still available and isn't going away any time soon. Both versions can be compared here. Perhaps it's ironic that this legal application which is often used for software "piracy" can now itself be pirated… Cohen's take on this will be interesting.