the sincerest form of flattery

So, I’m ego-surfing as usual, and what do I come across? A term paper about an article (pdf) that I wrote–for sale at $31.95. The summary and excerpt of the term paper are poorly written and highly inaccurate. Can I sue? Should I write a better paper about myself and sell it? If a wildly inaccurate summary of my article is worth $31.95 on the open market, can I start selling the actual article for, say, $40? (Right now, it’s free.) Should I be offended that people are willing to pay $31.95 not to have to read and write about my article? Does a plagiarized term paper count as a citation of my work? Why does my own article rank lower on Google than a site that sells a lousy term paper about it?