A very interesting service - it provides (dummy) login credentials for services that require registration. For example, all those newspaper archives that need logins. If you don't want to enter your data, you simply use BugMeNot. With the bookmarklet, the whole thing is nice and easy. And you can also use the service to link to pages on services that are so heavily restricted.
Especially practical for those annoying demographic-data-collecting and we-spam-your-registration-to-death services.
Is that ethically correct? Sorry, folks, but is the constant asking for shoe size, hair color, and penis length (hey, the penis-enlargement providers have to get their addresses from somewhere) by the various archive services ethically correct?