I haven't found a web based tool that I like too much. I use Bottin, a small and efficient piece of software I got from www.tucows.com
It works well and I just put the installer as well as my friends file on the web so I can access it from anywhere. The installer and the program are small enough to easily install on any machine even without privileges. It also opens as a text document.
That's the best solution I have found.