We also have to pay our Internet Service Provider. So to keep our wagon rolling we do carry adverts onsite. We hope they won't cause you any difficulties. We ensure that our site has the human touch. We don't copy huge wordlists from some corner of the Web, find synonyms for each word as clues using a computer and then automatically publish what comes out without further consideration or editing.
Some folk do.
We don't do it because it can also be a little nasty, producing weird words at random and often even weirder clues which are sometimes offensive and sometimes just duplicates of others. The results can be, well, rather unusual and not really satisfying to solve. It is not straightforward in the global environment of the Web, but we do avoid words which are likely to offend anybody. What is harmless in one country might be grossly abusive somewhere else, even where the English language is spoken in both places, and we do not know every insult in every country which uses English. So if someone notifies us of a word that slid through our own trawl, we will expunge it from the site.