I have been reading the website companion to Upgrade Your Life. One of my favorite tips is using a site called BugMeNot to avoid having to register for websites. The idea is when presented with a website for which you must register, simply go to BugMeNot and enter the URL. You will be presented with a list of usernames and passwords already known to work.
I gave this tip a try, and it worked like a charm! If you hate having to register for yet another site, add BugMeNot to you Favorites or Del.icio.us.