I've noticed that much of the most recent comment spam arriving here (and nicely caught by Blogger's spam filter) is from sites that sell research papers and other shortcuts of very dubious ethical value to lazy students. All of it seems tailored to the American market.
I've also noticed (teaching online at DU), that the use of paid-for essays, plagiarism and such must be on the rise: until last year, for example, students were only required to subscribe to the university's ethical policy. Now not only they have to do that, but their papers also are scanned using a software program that flags suspected plagiarism.
So: these students are paying for university (normally, paying a lot: university is expensive here), then they pay extra for someone to do their homework for them. Don't they realize that this way they are short-charging themselves, and that this way they will not really learn from what university has to offer?
P.S. This is not aimed at my students: I know they are doing their best in my classes - it's just a general comment prompted by too many spam comments purporting to sell "cheap essays".