Now who hasn’t wanted to create a email address just to validate some crap, but you normally end up getting loads of spam from them so I did a little searching around and found bugmenot.com has a usefull tool (http://email.bugmenot.com) it will create a email address for 24 hours allowing you to get the validation message and hear no more from them.
I never realised before that people actually did this and I now have a large amount of them bookmarked which you can find on my typer tappers delicious page http://del.icio.us/TyperTappers.
It makes sence upon how this works I remember one of my website hosts used to have a root address so I could do something like billbob93726938@typertappers.com and it would to the root address which was something like root@typertappers.com it you host your own mail server you might know what I mean but other wise if you want to temporarily subscribe to something check out my bookmarks http://del.icio.us/TyperTappers/email.