I didn't update my blog for one month PR Dropped From 4 to 3

Hello world, I'm alive. Yes, still alive and ready to roll again. I was very busy doing offline things. I have not made any updates on this blog of mine for more or less one month I think. As result my PageRank dropped from PR4 to PR3 proving that the frequency of post affects the PR. Posting regularly can boost your blog's PageRank and can dropped down when you don't update often. Traffic still pours in though. Thanks to my ambushed keywords. They did the work for me while I'm away. So that's about it. Nothing really interesting. I'm back and blogging again.