Viewed this website and searched for google. The website basically provides sites similar to the site you put in, if you put a search engine, ideally it should have given you another search engines.
When people build apps, especially the user generated content types, spammers need to be taken care off.
Spam and spammers are a big part of the web, they need to be given the attention they deserve, we need to keep them in our mind when we make our apps.