If you want to find information on the popularity (sometimes equal to influence but not always) of PR bloggers, you already have quite a few choices such as Technorati Blog Finder: PR and Blogpulse Profiles.
In explaining how it all works, Constantin says:
- Take an edited version of my directory of PR and communications weblogs (The PR Blogs List).
- Add the PubSub’s LinkRank of each source, calculated on a daily basis.
- Publish everything on a single page as an ordered list that shows each blog’s current LinkRank, its changes since the previous day, and which blogs have the biggest rank gain.
I’m not sure, though, that I’d place too much reliance on such a list as a valid indicator of a blog’s popularity or influence. How do you measure the accuracy of something that produces completely different results compared to other tools like Technorati’s that I mentioned above (and that one is based in large part on how bloggers have listed themselves)? Different ways of measuring add to the confusion and lack of fuller confidence in these offerings.
Then you have the tongue-in-cheek blog valuation metric which you should take with a large pinch of salt (although I couldn’t resist trying it – it shows my blog is currently worth $184,040.04).
Still, The PR List is a useful tool. I like the easy visual way it indicates a particular blog’s up-or-down trend using little green and red arrows. So if you want to get a snapshot view of PR blogs’ movements on a daily basis, this might be a good way to do it.