If any one of you is usingas your email account (in addition to Yahoo etc), then please read this true story about a security hole in which may lead to some very serious problem if you ever send/receive any password related information through .
The website of a guy was hijacked by a hacker who controlled his Gmail account. Though it appears that this security hole is fixed by now, you never knows what can happen
Read here :
How he got his domain back : Read here
Read about : Gmail Hack technique