I guess there are many factors, some of the things I look for is if the directory pages have static pages which have a google pagerank. Also you need to check whether the directory pages actually pass on google pagerank. You could check existing links in the directory and see if google recognises the inbound link from that directory.What is the difference between "SEO Friendly Directories" as oppose to "non-SEO Friendly Directories"?
ian said:you could check existing links in the directory and see if google recognises the inbound link from that directory.