Quick answers - dont go by what you see on the toolbar for PR (or any of those check your PR sites for that matter) - they run about 3 months behind what the real PR is at Google and Google loves to "misdirect" WMs
-also PR can be faked very easily - didnt check this site to see if it was in this case
The link: command is also not very reliable - it might show about 5% of the real links - you would be better off checking it with the yahoo link command - again Google hasnt shown real linkbacks for almost two years now
The highest adult (a real porn site) out there with real PR has been a PR of 7 - back when we could check those things reliably - but interestingly - they didnt rank for very much again proving that PR doesnt mean diddlysquat when it comes to ranking well in Google results