BugMeNot gets you into sites that require
a "free registration" by keeping a database of URLs and registrations which
people have entered. It was recommended on NANOG, and after trying it, I
recommend it too. As a Mozilla/Firefox plugin, it's super useful.
Granted, I was a bit leery of installing a plugin into Firefox, so I pulled
there (xul is slick). As
long as you trust bugmenot.com to not abuse the fact that you access their site
each time you run BugMeNot, it looks safe.