Calls itself a RTF to PDF convertor. Doesn't but installs malware on your computer. It has wrecked my existing PDF files and until now I cannot deinstall it in the usual ways. Wish me luck trying to clean up my poor computer.
This Chinese (yet another Chinese site dressed up to look like a Western one) site claims to give customers access to books, articles etc not available elsewhere. It does not - it will give you access to reviews of the books or articles you want, nothing more. In addition you must pay $40- a month for basically... nothing
I think Amazon is just the best - when there is a problem (not too often) you are immediately refunded your money plus cost of return. What's not to like?