Have you ever been in a situation where you have forgotten which all websites you have signed up for? With me this has been a case for a long long time. I keep signing up for new web2.0 services and at other interesting forums and tend to forget what username and passwords I had used to signup for a particular site.
You can of course keep track of them by saving the passwords with the inbuilt tool browsers provide you with, but not all websites allow your browser to store your passwords.
The most simple solution in such cases is to store the information about the websites, username, passwords in a database format so that you can easily view and retrieve them whenever you want.
Utilities,Free Software,SignupRecordTracker,Online Signup Tracker