Yahoo and Spamhaus
It appears the Yahoo is changing the game a bit on deliverability issues. In this post from Word to the Wise, it explains the new method that Yahoo will use to block connections from listed IP address.
Good to see that Yahoo is taking some measures to really block spam, and although its a hurdle for legitimate email marketers, I view it as an opportunity for those of us who live in the email marketing world to boost deliverability rates to yahoo. If done right, a legitimate email marketer can capitalize.