I think I would simply call these advertising pages, nothing more. These sites have our name on them so they know what our company name is and honestly I don't know why Google would frown on it because it's simply another form of advertising without the high price tag of adwords and/or YSM. We don't list more than twice on the main SERP's page either so we're not spamming the results and obviously both results are relevant or they wouldn't be in the top 10. I can understand it being spammy if we did have results 1-7 but that is not our intent. We target a long tail phrase and make unique content on the advertising site with "buy now" links pointing to our main site's product information page and because we don't want Google to think they are spam we made adjustments to all of the sites by "no-following" the links to our main site so we're not inflating our inbound anchor text per Google's standards. Also all of these advertising sites are not on unique IP's they are all on the same shared IP. When you run your own dedicated server and you can have unlimited domains why not take advantage of it? Hopefully our main site never gets penalized by this but luckily it is only one of our sites that we do this with. This particular site only has about 1800 products on it so we make these advertising pages for the different terms that provide high traffic and not the keywords that drive minimal traffic. Quite honestly, my competitors are doing just this as well when they have affiliate sites pointing to them with their affiliate_id's in the URL. Simply put, we are making our own affiliate network minus the affiliate payout! :>~
The biggest name in e-commerce does this very thing in masses! I'll give you a clue...AM#$ON.
[edited by: MLHmptn at 5:35 am (utc) on Mar. 20, 2009]