martinibuster - 4:52 pm on Aug 28, 2012 (gmt 0)
...because he wants to supress the paid link market.
Or... Matt was just being nice to the guy by taking time to answer his question, then (as stated in the blog post) publishing the email so as to benefit anyone else.
The part that's been overlooked in this discussion is that it took a spam report to identify the infraction. It wasn't the algo. It seems like when the algo is unleashed to hunt down paid links, the scope is restricted in some way. That seems to indicate that Google's ability to algorithmically spot paid links is limited.