AdAge's Power150

Down the Avenue just made AdAge's Power 150, which is a ranking of the top English-language media and marketing blogs in the world.  It uses a basic multimetric algorithm to obtain a final ranking based on the sum of four sources, three of which are Google, Bloglines and Technorati. 

Google PageRank (0 to 10): Google PageRank is a link-analysis algorithm that interprets web links and assigns a numerical weighting (0 to 10) to each site. High-quality sites receive a higher PageRank. The actual PageRank number was used in the Power 150 ranking algorithm.

Bloglines Subscribers (1 to 20): Bloglines displays the number of feed subscribers. Subscriber ranges were determined (i.e., more than 20, more than 30, etc.) and each range was assigned a number (1 to 20) that was used in the Power 150 algorithm.

Technorati Ranking (1 to 30): Technorati ranking analyzes the number of sites pointing to a particular blog. The more link sources referencing your blog, the higher the Technorati ranking. Similar to the Bloglines Subscribers value, Technorati ranking ranges were determined (i.e., top 9,000, top 10,000, top 20,000, etc.) and each range was assigned a number (1 to 30) that was used in the Power 150 algorithm.

Todd Andrlik Points (1 to 15): As the only subjective measure in the Power 150 algorithm, 1 to 15 opinion points were assigned to each blog. Todd Andrlik values frequent, relevant, creative and high-quality content. The use of audio, video and graphics is also heavily weighted in the Todd Points.