I'm not a huge fan of Banksy. I find a lot of his stuff quite simplistic and he's certainly not in the league of someone lie Blek le Rat, who he is hugely derivative of. I found the whole fawning over the Love is in the Bin piece little more than populist sycophancy. There seemed a suggestion that anti art, destructive art or even auto destructive art was a new concept or something Banksy had created rather than a movement dating back decades.
On saying all that you can't deny he has built a great little niche for himself. The air of mystery around his identity and Guardian reader friendly political sentiments has made him a crossover success between graffiti artist and darling of the middle classes. And I did like his Che Guevara posters on Portobello Road, mainly because the people they were aimed at seemed to miss the point entirely.