There’s currently a pagerank update going on–you can figure out your future pagerank by querying different datacenters with this tool from SEOChat:

Future PageRank Tool © SEO Chat™ URL Valid URL

While PageRank is not the be-all and end-all of websites or your blog network, a higher pagerank does seem to indicate a more long-lasting and popular site. I am lucky to see mine rise from 5 to 6 this cycle, on my main domain and larger blogs, and from 0 to 3 on some of my new blogs.