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Looks cool, will be the best thing around on Linux (really needs a good music player) but its too buggy now and is taking too long in development. iTunes has Coverflow and a nicer interface, but Songbird extensions could put it ahead in features in the future.
 
Its blog searcher is very nicely done, although of course it feeds a marginally legal / gray area activity. It's the only really redeeming thing about Songbird so far. Otherwise, like psychofreak said, in the long run, Linux will need an iTunes wannabe, and Songbird has some potential in that department.
 
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