I've seen a massive amount of sh*te support acts through the years. (JFAC anyone?) but bottling is a step too far, actually felt quite ashamed at the bottling of MCR, especially when there were stones in bottles thrown from the crowd, it usually hit other people in the crowd rather than reach the stage. Also, didn't see the point in the MCR one as they were the headline act, so why stand and watch if you didn't like it? To ruin the gig for the genuine fans? Idiots. I'm not a fan of them by any means but my mate kinda was, so i stood with him in silence.
Aye my mate was at that Wembley gig, he says folk were doing the YMCA and such during HIM's set, which I like as banter, but bottling is outrageous and should never happen at any gig.