Why Kweli Why?

Why is this mixtape this hot? It almost makes me kind of mad. Makes me think maybe Kweli was holding back on Beautiful Struggle or something like that. Seems like half the songs on this joint are tracks that didn't make the Beautiful Struggle. Why keep the hotness from your fans while giving them lukewarm mediocrity?

Can someone please explain the difference between an mixtape and an album, cuz I don't understand. Is it just a question of royalties? Cuz this "mixtape" has liner notes and all that, whereas the previous mixtapes seemed more like actual mixtapes- low-budget CD's with upwards of twenty songs with grassroots distribution.

Remember when mixtapes were actually mix tapes- casette tapes with a mix of songs.