The spam has gotten pretty bad on the news articles. Why not wordfilter for the clothing brands often mentioned in those posts and delete them early? I'm fairly sure ed hardy and gucci have little to do with 99.9% of tech articles.
Just an idea. Might be temporary depending on how fast the spammers figure stuff out. I don't know how they operate their stuff, but they seem to be fairly good at it (or toms seems to not care...).
The existing word filter doesn't work on article comments, only posts made directly in the forum. Of course that itself doesn't delete posts, it just censors the junk out. It's handy for breaking links though.