flashdash - 9:38 am on May 26, 2011 (gmt 0)
That's the funny thing...there were never any links injected even in the Google cache. Just keyword spam. And it's all gone now. View source on the page - clean. View source on Google cache - clean of links but added keyword spam.
I can't see any benefit from someone even doing it.
This looks like an automated spam software with embaded links and garbage keyword that tried to stick links on your WP pages. Looks like it failed on href side, but did add the words. There are loads of exploits for Wordpress, some are public and many are not. Make sure you WP is updated and keep your plugins to absolute minimum - they can be exploited too.