Shaddows - 4:27 pm on Aug 28, 2012 (gmt 0)
As far as I know, there are no restrictions on how a website can use the PR number google provides
AFAIK, there are no restrictions on what number Google gives a website.
What I now know (and frankly a lot of people knew already) is that they reduce it (or stop providing one at all) if they don't like what you're doing with it.
And again, it doesn't affect your rankings. And the only reason MC is talking about it is to make sure we're talking about it- because he wants to supress the paid link market.
Frankly, I take the pragmatic view outlined by Netmeg. It's Google's number, play by their unwritten rules or don't play at all. But I don't really mind if anyone wants to take a principled stand against this, as long as you come away with two points
1) No one got penalised (yet)
2) MC is only talking about it to spread FUD