if you are referring to this on that search page then yes, it is not an ad but routine indexing of posts by a search engine. The search engine "bots" crawled the thread and indexed the posts. they are appearing on a search for that company's products because those were mentioned in your posts.

So it doesnt appear to be an ad, but rather just an index on the search engine of your original post from this thread in which you refer to the company's product
http://neurotalk.psychcentral.com/thread49764.html