Here at Link Emperor we believe that you should be actively Search Engine Optimizing any website that makes you money.
Link Emperor allows you to build backlinks to any "target site", URL or website you choose. Essentially you can use Link Emperor with any site.
We've personally seen great success using Link Emperor with eCommerce Stores, Affiliate Sites, Business Websites, Blogs, Bum Marketing pages, Article Marketing articles, Web 2.0 sites, Adsense sites, and more.
We support and build links to them all. If the site makes you money, you should be doing SEO to get more traffic!