About PageRank

My pagerank used to be 3 a while back and it hasn’t moved up from 2 in a long time. Is there a way to tell if i’m being penalized from any of my outgoing links or for anything else that I’m doing?

http://www.best-stock-trading-systems.com

For more detail, read this:

http://wikipediareview.com/index.php?s=&showtopic=27068&view=findpost&p=201732

How is that wiki directory able to dominate the search results so easily?