Spam filtering - how difficult can it be?

I've been using the Windows Live Mail beta for a while. Loyal readers will note my earlier efforts with Gmail, Yahoo mail, etc. I'm a big fan of web based email on a PC, but only if it's done with smarts, minimal clicks, little or no latency, and minimal ads.

The old "hotmail" failed on pretty much everyone of those. When we moved up here to Microsoft I switched my wife over to Hotmail from Yahoo just to be a good citizen and she was bombarded with giant banner ads at the top of the screen, screaming about toothpaste or something.

So when I saw the demo of the new mail service back in May, I jumped on the opportunity to get on the beta. It's a quantum leap over hotmail and it has the responsiveness and "cleanliness" I am looking for. The drag and drop and multiple selection of items is great, too, better than Gmail.

But here's my dig - is it so difficult to tell what spam is? Here's an email I received this evening - "SEXUALLY-EXPLICIT: bums fucck'ng video". Can you tell if it's spam from that title? Unless you are a complete idiot, the answer is yes. However, Mail cannot, in spite of me telling it so doxens of times by hitting "Report and Delete."

Have spammers become so crafty that the mail filter is fooled by "fucck'ng". Or maybe it's the crafty use of "Sexually-Explicit". Or "bums".

How crafty, indeed.