Almost all of these 'mandatory free registration' websites let you choose your own username and password, and some even tell you the minimum length on the login screen (
New York times, anyone?). The best service you can do is use a disposible
hotmail account to sign up with an obvious
username/
password and spurious details.
Often you don't even need to register, someone else having done the work for you. Mr
qwerty, and Dr
zxcvb get around a lot. Often Mr Qwerty's account gets nuked, but they often overlook
Professor Bvcxz.