You will also note Dave has removed the hotlink from Mr Greenstein's post, as he has done in the past.

There is a difference between contributing worthwhile information to a site like this -- adding value, if you like -- and also having a hotlink to your business, to simply setting up a strawman to drive business to your site, which in this case is a direct competitor of this site. As I said, not kosher, esp as he has been warned before.