Its just your AIM password
not like a SSN or anything
Is this always the case though. For instance, for Google messenger - isn't your pwd the same as your gmail account?
If you have a hotmail account and use MSN messenger - they both use the same login/pwd.
Yes this is all true BUT with a VERY different twist, if you *ARE* say AIM well you are responsible for it, but these are THIRD PARTY sites you are refering to, its like giving your car keys to a vallet driver (which is what you do when you logon to any of these sites) OR you give your keys to some kid to give TO the vallet driver, and you really have no idea who this "kid" is

Does that make the vallet driver or parkinglot unsafe? No, but if you are how should I put it trusting enough (naive?

) to give out this info to anyone on a site (yes it's not "anyone" but it MIGHT BE!) its like giving your keys to anyone.
Another note is how many people use the same usernames/passwords for other things?