Maurice - 9:32 am on Oct 16, 2012 (gmt 0)
Well as some one who has had a UGC spam penaty applied to one of our sites. It was spammers posting links to copyright infriging sites - pirtated hollywood films or streams of olyimpic TV. That caused the penalty.
Our editorial team had noticed this and had started cleaning house banning users and deleting posts just at the time we got hit with the penaty - my feeling was that the spammers reported us out of spite.
Oh this was a "brand" site from a major Publisher.