When it comes to music discovery sites, there seems to be a new one every day. Some of them I will talk about here but I doubt I'll post about every single one of them. The objective of a music discovery site is to create a personalized radio station for you based on any number of input values (typically a single band or list of bands that you know you enjoy).
One major difference between a music discovery site and a site like IMEEM is that you typically are not there to listen to a particular song or album or even artist. You go there to listen to music you might not have found unless it was played for you (much like the radio).
Of all the music discovery sites out there, the one that I use most often is Jango. This is due to a combination of design and user interface. Specifically I like the ease of creating and maintaining your personal stations which can be shared with others. It also provides a level of social networking which lets you find other users with similar interests. You can add those users and friends and listen to the station that they have created.
For all the positives of Jango, it is not perfect. It is still in beta, but it has been for a while now. The player seems to be their biggest problem due to the glitches it has on occasion. Refreshing the page seems to fix most problems, but then the player restarts on a different song.
Pros
- Easy to create and maintain stations
- Allows multiple stations
- Social networking
- Allows you to play specific songs if available
- Recommendation engine is flexible
- Player will stop on occasion and cannot be opened in it's own window
- Player will occasionally cut songs short
- Community is not as large as other sites
If you are at work or reading a book or just surfing the web, Jango is a great site to have open in the background. If you spend the time and add a large selection of artists you are interested in to your station, you can listen to it for hours without repeats and a few artists thrown in that you may not have heard before.
If you want to listen to a very specific song or artist, other services might be better. But I find that I often just want to listen and enjoy.

