Okay I think we need a thread full of useful sites that offer great free services. Keep programs in the freeware thread; just post sites that offer free services. Post away!

I'll start

http://www.bugmenot.com - quickly bypass the login of web sites that require compulsory registration and/or the collection of personal/demographic information. Be sure to download the Firefox plugin...makes things so much quicker and easier.

http://www.mailinator.com/ - Just send mail to anything word you want @malinator.com and you'll be able to receive it. Great for contests or other sites/sign ups where you don't want to use your real email address. You'll still be able to check it and if you use something like [email protected], you'll be the only one to know it, so your email will be safe.

http://www.dropload.com/- Dropload is a place for you to drop your files off and have them picked up by someone else at a later time. Recipients you specify are sent an email with instructions on how to download the file. Files are removed from the system after 7 days, regardless if they have been picked up or not. You can upload any type of file, mp3, movies, docs, pdfs, up to 100MB each! Recipients can be anyone with an email address

http://www.toolhaus.org/cgi-bin/negs - View only the negative and netural feedback for any eBay user. The Firefox app works great and makes reading only neg feedback a breeze.