Digg recently announced that they're changing the way links are handled on their site. They didn't go into much detail but what that basically means is that links within comments and profile pages, and links from stories below a certain threshold of trust won't parse any PageRank (ignored by Google).
This is definitely a good thing, as I've often come across spam Digg profiles ranking for fairly competitive terms.
My problem is the way in which they announced it:
We’ve made a few changes to the way Digg links to external sites that may impact some folks in the SEO community.
SEO community...
A working man works till the industry dies
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Some industries and businesses collapse because of a fundamental change in the market. Newspapers and payphones are becoming less relevant, so are video stores and bowling alleys. These represent the classic example of technology changing market demand, causing some existing and even entrenched industries to collapse.
But I think a lot of markets have failed or are beginning to fail simply because they aren't doing anything new. As previous supporters die out, nobody steps in to fill their shoes.
One example of this is the racing industry,...