Re: They are clueless
I get loads of "Yahoo!" phish mails. The obvious giveaway is there is no purple "!" icon beside it so I know it is a fake. Then there's the level of English used - you'd have thought a big scam targetting thousands/millions of users might stretch to finding a native English speaker to write the message...
Icon, however, for the utter stupidity of Yahoo! allowing into its system a message claiming to be from "Yahoo!" (indeed "Yahoo!" anywhere in the sender's name) - such messages should be auto-nuked (from space, it's the only way to be sure).