Since the development of Search Engine Optimisation as a concept, there has been a fairly obvious temptation for some people to try to rig the system in their favor by using the principles of SEO in a less-than-honest way. Because the idea of SEO is they keywords create cash, the idea that has occurred to a lot of people can best be summed up in the following sentence: “If they want keyword volume, we’ll give them keyword volume”. This tends to occur in the shape of website text that contains nothing but keywords.
Of course, this means that the website will be scarcely readable, if it is readable at all, but the trick is usually applied by webmasters who don’t really care if you actually read what is on the site. Usually they will use it as a landing page that immediately redirects you to the site they want you to read. It will happen instantly and you will not see the landing page, but it will have done its job. For the reader it may be little more than an inconvenience, but for other people operating in the same niche, it is cheating.
The main reason that tricks like this are a bad idea has only a small amount to do with the fact that it is cheating. In actual fact, it is incredibly limited as an SEO tool because Google and other search engines check for such tricks and will relegate any such site in their rankings – so not only is it dishonest, it is also ineffective, which is what will really stick in the craw of the people doing it.