Ok now I know that most SEO’s know and have been saying this for a long time, but now a Google employee John Mu has posted the following content
We do Toolbar PageRank updates 3-4x/year but to be honest, it’s not something that you need to wait for. The PageRank shown in the Toolbar is an older snapshot of the PageRank that we use internally (which is continuously updated). Changes in Toolbar PageRank will not change anything with your site’s crawling, indexing, or ranking, so as a webmaster, I’d strongly recommend focusing on something else.If you are using PageRank as a means to sell PageRank-passing links, keep in mind that this is against our Webmaster Guidelines, and can negatively impact your site’s ranking in search results.CheersJohn
BUT. DESPITE the clear instruction above by John, only a few comments down, someone posts
I’ve found that Google typically does a major scan of the web every 28-30 days (once a month) and updates PR every 3-4 months I’m just waiting for the next update so they can pick up my new site.
We have a saying in Wales that goes ” you can’t educate Pork, you can only cure it” 😉 Some people just don’t get it do they?