my feeling too
it really seems like anarchists are anti-everything, only the anarcho-syndicalists seem to have historically (in Spain I think) had any actual program or coherent world-view.
In any case I'm not an atheist, nor anti-American, and can easily take capitalism in moderate doses (meaning, not as a totally dominating ideology), so I'd have nothing to do with those guys.
(and their 'bomb-throwing' rhetoric is more out of place in these trying times, than ever before ..)