My 21 day old search engine just got a PR5, Question:

The question I have is:
Is this valid or did Google make a mistake? I have SEO'd a bit, but mostly people have found it and posted blog stuff about it. I have a bunch of good links to my search engine but I was surprised.

I'm getting some decent traffic top 300K or so (according to alexa).

Will this PR hold up? Any recommendations how to keep it up?

Site: http://docmazy.com

Thanks guys.

 

i think. your site have back link from authority site. find it.

 

I have 1 .edu link could that be it?

 

1 good authority link can do wonders.

 

Whats the PR of the link?

I have a search engine type site as well, mine is nearly 1 year old with several natural backlinks, no outgoing links and it seems to be stuck on PR-2.
But the Alexa is at 32k, so I guess I can live with that

Cheers
James

 

It is a PR8, but it a forum of the PR8, why doesn't Digital Point (PR7 i believe) make the same kind of up to PR, if it that was the case?