There are fees paid to those sites such as Slickdeals that provide such links that are clicked. As I understand it, this site finds that to be objectionable and contrary to its own financial interests.
Last time this was brought up, it was from you specifically talking about a link I posted from slickdeals. I looked at the site faq and the thread rules, and as far as I understand, it's not against the rules. I'll continue to post sd links until I hear otherwise. Specifically these adorama deals since slickdeals plays a role in setting up these deals from what I gather.
The bottom line is I don't think the no deal site links rule exists, snd when you bring it up, it detracts from the deal thread(see the last page of discussion).