I'm building a blog where I personally write about topics in my professional field. I just started it in early June, and the first article was online 2-3 weeks ago. So far there are 6 articles with about 5000 words. Last night I noticed -via the SEOBOOK toolbar- that I had PR of 4, same as the 5-year-old top blog in the same field (!!!). I thought it was because I had recently written a 1000+ word article that out linked to several .gov sites, and my other articles also out linked to .edu, .org, etc sites. Well, I was ecstatic, but not so much when today I checked again just to see PR back to 0.
Could it be the directly referred content (too many citations)?