I have 5 or 6 Yahoo accounts and I think I'm going to Gmail completely. I don't want someone scanning my personal mail. Yahoo just the other day lost an account with 28 million customers in Europe because of them not protecting email.
Didn't you read the article? Good ol' Gmail has scanned your e-mail long before Yahoo decided to. Exactly why I don't touch ANYTHING Google or Gmail! Not that great of crap anyway.
I've used Yahoo since 1997 and have never had an issue although the spam has really been coming through lately. Guess it's just time to go with the flow as I've been able to stop Yahoo from updating up until now.
Have ALWAYS used my ISP's mail also, but usually only for more official type stuff. Have so many different e-mail accounts, e-mail is never an issue anyway!