Googling, the solution for almost all net problems, may lead to some sites which needs a registration. You may not wish to sign up for all such sites as afraid of spammers. Thinking of using fake ids.
Yes, I am rounding about that only, you can get many such fake ids and passwords.
I recently got this site and bookmarked it, its very useful for all those who never wish to take up the risks of sign up but want the benefits of the same. The site is BugMeNot.com.
I checked it for many sites, few of them worked. You don’t need to be bugged of signing up to use their service. Users have an option to vote if the id is found working or not. And you can even provide any fake id if you have to them.