Spam every academic email with link to "I thought you might find this paper interesting", lockout every university in the world? It only takes one click by one unsuspecting victim per institution. I wonder what would happen if someone includes that DOI in a publication reference. Watch which institutions go dark, and you know who is doing your blind review.

Undergrads won't open that link, and grad students and faculty are too busy.

To really do damage, you need to create something that'll go viral, and piggyback the link on it. Undergrads will click anything that looks fun. Make it look fun and you're golden.

You wouldn't need to click the link. Just include it on another page as an img src. Right?

Things like signatures on forums visited by university students are the first to come to mind. Embed it through one of the many referer-stripping redirectors out there, and none could be the wiser...

If you're up for a little fraud, get a list of faculty and undergrad e-mails and send e-mails to undergrads purporting to be from faculty saying, "Please read this and be ready to discuss in class on Monday." The hit rate will be low, but you're bound to get a few students who really do have that professor's class on Monday and will click it.

Send it to the adminstrative staff then, they spend about 50% of their day surfing.

Yep - the naughtiness you could get up to with this is almost endless. I get the feeling that this will not be with us for much longer as every university in the world is about to get locked out.