Anyway, I decided to write a blog post as a reply to his comments.
Well Kai, I have been blogging since September 2003 and started this blog in 2006. Since then, the Google PR of this blog has seen it's fair bit of highs and lows and the highest it ever went was a PR3. Read "Google PR updates and my blogs".
I got Google slapped in early 2008 when my PR dropped to 0 and has remained there ever since.
As to the question whether Google PR matters, I have to say "Yes!".
Traffic from Google is now lower and I have had to find other ways to increase traffic to my blog. A few potential advertisers pulled out when they realised that the PR of my blog is 0. Just shows how much importance that people pay to it. I haven't carried a sponsored post for ages but I still do carry affiliate links as well as Google adsense.
It might come as a surprise to many people that among all my blogs, this has the highest traffic per month. It also has the lowest Alexa rank (248,431 as of today - the lower the better) .
All of my posts are indexed almost immediately (advantage of hosting with Blogger) and my blog also ranks high for a number of key words. For example, try 'seo expert coventry' in Google search.
So Kai, as you can see, I am actually quite patient but you are right about one thing though - many advertisers do look at the PR of a blog.