I know that many of us use free internet e-mail accounts such as yahoo, hotmail, gmail accounts in the hobby. If you are curious if your yahoo e-mail was one of the 450 thousand hacked, there is a secure server hosted by the security company Sucuri Malware Labs and you can see if your account was one of the ones that was hacked. If it was, you should change your passwords immediately.
http://labs.sucuri.net/?yahooleak
I checked it out and the link works and is on the up and up. Good luck everyone and stay safe.