crobb305 - 2:52 pm on Mar 28, 2013 (gmt 0)
The pattern you describe sounds like what often happens after a site is hacked and a cloaked, parasite link gets inserted.
Tedster, I agree these backlinks appear to be on hacked sites. Some appear to be legitimate .edu websites, with hacked/cloaked pages and inserted links to my site. I have found over 7,000 such links to my site, according to Google Webmaster Tools and third party link tools. Even a link: search on Google reveals these links, so Google has yet to pick up on the fact that they are hacks with cloaked content and redirects. I am stuck paying the price for the resulting backlink profile, but hopefully my disavow list is a step in the right direction.