aristotle - 3:03 pm on Mar 7, 2013 (gmt 0)
Your theory that these links were created accidentally could be right, of course, but I wouldn't bet on it. Millions of auto-generated links are created everyday, and many of them disappear shortly afterward to make room for new ones. I believe that it's a scheme that spammers use to try to get a brief rankings gain and short burst of traffic by associating their pages with reputable pages on the same topic. Also, they may get some traffic from webmasters who see the referring page in their logs or analytics or WMT, and click out of curiosity to see the pages that contain the backlinks.