I've used it and it seems to use a proxy connection to computers that have appropriate access to download the paper, and then it caches it server-side for any f

I've used it and it seems to use a proxy connection to computers that have appropriate access to download the paper, and then it caches it server-side for any future requests. And many journals actually have prominent lines on the side of every page saying "Downloaded by [name] on [date]"; I'm guessing it doesn't deter them for whatever reason though.