I want your opinions on the lack of increase in Pintrest's PR

[UnderRugSwept]

Many months ago, a fellow marketer at my company introduced me to Pintrest, claiming that it would be good for our business. Pintrest was very much unknown by many just a few short months ago. Since then, I have seen it take off like wildfire, with excessive media coverage, registrations, and people putting the button on their sites. It must have thousands more backlinks now than it did six months ago--high quality ones too, as it's had coverage in virtually every major new media outlet.

I want your opinion as to why it has remained a PR6 site this entire time. It was a PR6 site then and it still is now. I know the increase in PR is algorithmic, but come on! Can people share their experiences they've had link building for those higher PR sites? How much harder does it get?

[A_Q]

This is a really interesting question. I'd never really thought about it.

Perhaps it's just Google being spiteful as it's people use it more than G+ (Not really what I think but I don't understand why.

Maybe Google throttle back PR increases for new sites. I suppose as Pinterest is relatively new, although it has many good quality links, Google may not let achieve a greater PR than 6 for the first couple of years!? This is just wild speculation by the way.

[KeriMorgret]

Keep in mind you're only seeing the Toolbar Page Rank, which updates only a few times a year, and isn't an exact reflection of the constantly-updated real PR that's internally calculated by Google.

[UnderRugSwept]

Oh! A few times per year! I didn't know that. I figured it was once a month or maybe once every other month. So would the same be true of a site like this? http://www.prchecker.info/

Is there no way to check the real PR?

[KeriMorgret]

Sometimes it's been as long as six months between toolbar pagerank updates.

Nope, no way to check the real PR. The answer you'll get from many people is to ignore those green pixels and carry on with other things.

[Copstead]

Do to the fact that Google's PageRank (PR) is updated so randomly, I believe that is why many people use other Metrics such as SEOmoz's Page Authority (PA) and Domain Authority (DA) to really track a sites progress.

PR is just a number we show to clients when they ask, but focus on PA and DA and explain to the clients why these numbers are much more important.  These are updated monthly and are pretty much inline with Google's algorithms.

[UnderRugSwept]

So here's something interesting. If those PR toolbars are so behind, why is it alreay showing http://www.buildmyrank.com/ to be a PR0 when it was just de-indexed by Google a couple weeks ago?