Crush - 7:50 am on May 11, 2011 (gmt 0) [edited by: martinibuster at 9:21 am (utc) on May 11, 2011]
Link buying sites better than ever from what I can see.
Link swaps are low quality for sure, buried on a page that has one link from it on the index page.
A paid sitewide on a blog with an alexa of sub 100k is a zillion time better than the one crappy link.
As for Google finding the link sellers, well why would they ask you to report link sellers/buyers if they cannot detect it themselves.
[edit reason] Spelling. [/edit]
[edited by: martinibuster at 9:21 am (utc) on May 11, 2011]