Robert_Charlton - 2:29 am on Dec 28, 2010 (gmt 0)

It always comes across as a warning to me, but why give any form of warning if the technology exists to actually do something about it.

If this is about what I think it's about, the warning is being given because there's a gray area that's existed, most likely with Google's knowledge, and Matt's being nice about it now that Google has decided to address the situation. I think it is about distribution of link juice.