this compilation is great for a number of reasons:
first, its a good cause, proceeds will "benefit the Red Hot Organization – an international charity dedicated to raising money and awareness for HIV and AIDS through popular culture."
secondly it stands as an accurate snapshot of a particular segment of current music culture. the participants are somewhat iconic and representative an exciting season in music- check out the tracklist.
third- it's just damn good. [thanks johnathan for pointing it out!]