Have you been searching in Google and found garage looking web pages that all look the same and are what I would call "search engine spam"? There is obviously some company or set of companies that have purchased countless numbers of domain names that are not being really used other than to spit out a bunch of useless content and links on pages that all look basically the same and link back to other sites they are probably providing SEO service to...these sites are a waste of everyone's time and money. They are garbage sites full of links probably set up to help their customers improve seo rankings artificially, because obviously these sites are not very useful.
Next time you are searching in Google and come across a garbage site, make sure you report it. There is a link at the bottom of the list that says "disatisfied with results?" Click it and report these search engine spammer sites so they can get kicked out of the rankings.