When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Really limited information. Don't know if it's a false positive or exactly what the threat is.
That said, I suspect this may have something to do with the redirect issue that was recently reported via a bad ad. The team is looking into it and also will be making further changes to help further control this growing trend where bad ads are the new spam emails.
The site is not infected and you've not been hacked. Alteast not from CorvetteForum. That IP address in particular is simply linked as a Spam source.