Using the PubSub ranking tool, Constantin Basturea has set up criteria to gauge the current popularity/influence of public relations blogs. It’s by no means a precise instrument, but it’s fun to visit, and might encourage you to check out some sites they’ve never read.
Check it out: The PR List -PubSub Community Lists.
Neville Hobson finds some value in the PR List, and several other tools for comparing the popularity of PR blogs.
With a wink, Media Guerrilla Mike Manuel brags about "being in a 75-way tie for 67th place."