[Andy's note: If you're a regular reader of Marketing Pilgrim - or my old blog - you'll recognize the regular comments by 'MikeOK'. I've always enjoyed Mike's point of view and so recently asked him if he would like to contribute an article on the topic of his choosing. So the following is by Mike O'Krongli]
Internet giants Google, Yahoo, Microsoft and AOL should be held accountable for the decline of usability of email, the most basic communication tool on the internet. They all have email services that filter spam and send blacklist and sometimes whitelist messages to a junk or spam folder. This action is leading to a ballooning email spam epidemic with many faces.