Comment on Clickbank WordPress Themes by Clayton Kessler.

Clickbank WordPress Themes My pagerank finally went to a 3. I give away a lot of links on my site to folks I interview. If I only have a few links per post on my site, does it have a negative effect on my PageRank? Am I correct to think that the most effective way to increase pagerank is to have one way inbound links? I have thousands of social bookmarking links like Digg and Stumbleupon going to my site but I don’t think they get counted as inbound links??

Alexa seems to have a really low count of links to many sites. Are there answers to why that is?