Man, I'd love to be able to share songs via Grooveshark here (since this is a music forum). It would take up so much less space than YouTube vids, and there are more songs available. There are other forums who figured out how to integrate Grooveshark via BB Code, it just needs to be programmed in somehow. Users use this:
[Groove]2482467542[/Groove]
---------^song ID^----------
It seems to work well. This forum has it included in their list of codes:
BB Code List - Bohemia Interactive Forums
If anyone here knows how to do it, I'd love to see Grooveshark integration here