He says he's part of 'the largest and most effective boycott the US has seen in a long time'
Artists donate custom artwork to raise money for the Haiti earthquake victims
Arrested Development will also perform at neighbourhood festival
Los Campesinos!, Lucinda Williams also set for San Francisco festival
Theyll play free July 4 show at Battery Park<br />
'One Of My Kind' is hoping to raise money for charity
'Outer South' is due out in May