How to determine of the PR is Valid

[ptaylor]

I have been looking through some data on expired domains and noticed that many PR 4-5-6 sites don't have many links which makes me question the validity of the PR. Then I looked through recentdly dropped domains and the data would indicate that there are quite a few domains that had PR 4-5-6 with no links, which makes me think that something is wrong because I know with a lot of people going through these list someone would pick up a valid PR 5 site for $8. What am I missing here? How do you determine whether the old PR has any value?

[copper]

Many such sites' PR is forged.
You'll get forged PR when you forward your domain to high PR such as Google.com

To check valid PR, try this site.
http://www.checkpagerank.net/

I have been looking through some data on expired domains and noticed that many PR 4-5-6 sites don't have many links which makes me question the validity of the PR. Then I looked through recentdly dropped domains and the data would indicate that there are quite a few domains that had PR 4-5-6 with no links, which makes me think that something is wrong because I know with a lot of people going through these list someone would pick up a valid PR 5 site for $8. What am I missing here? How do you determine whether the old PR has any value?

[georgemathews]

beat me to it. I was just about to link the exact same site. its a great resource.

[wussadotcom]

Search in google
info:example.com
if your site @ domain example.com comes out then its valid, if not or other sites come out then its ost probably fake.

[siteman]

PR is a delayed indicator.
So even if your domain already loses its backlink juice now, it may still show valid PR
'for a while', till next time big-G and the datacenters update their stats.

Always check backlinks before making any decision.