Undoubtedly a few of the largest blog hosts will hopefully retro-tag all links, like Classics said.
But even if that’s 80%, there’s still 20% out there. Lotta blogs.
Then when you add in the rest of the webmasters who don’t run blogs, but see this as a way to preserve their own PR… bang!
Take “blogs” out of the equation – this solution may have been designed for the blogs, but it affects the ENTIRE net and EVERY website!
The really strange thing is that, like Classics said, I probably stand to gain the most – but that discounts all of the cons out there who will use this “tool” to continue to maintain their top positions on the SERPs.
On top of that, this is likely to drive more webmasters underground as they seek a way to overcome such a biased system.
What they SHOULD have done is written code to recognize the most popular blogs – and discount the links INTERNALLY… duh!