Learn the Algorithm

The Healthcare 100 is a global ranking of the top English-language healthcare blogs, inspired by Todd Andrlik’s popular Power 150, a list of the top English-language marketing blogs.

Our goal is to provide both bloggers and blog readers interested in all aspects of healthcare with a simple way to find the most influential blogs. We rank each blog’s influence based on a multimetric algorithm, also inspired by the Power 150.
Ranks are based on a combination of four sources:

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.

Bloglines Subscribers (1 to 20) – Bloglines displays the number of subscribers for each blog’s feed. Each blog is assigned a Bloglines value from 1 to 20 based on subscriber ranges – e.g., more than 20, more than 30, etc. The more subscribers, the higher the Bloglines value.

Technorati Authority Ranking (1 to 30) – Technorati’s authority ranking shows the number of unique blogs that have linked to a particular blog over the past six months. The more link sources referencing your blog, the higher the Technorati ranking. Similar to a blog’s Bloglines value, a blog’s Technorati value is determined based on ranges (e.g., top 10,000, top 20,000, etc.), and each range is assigned a number (1 to 30) that is part of the algorithm.

eDrugSearch.com Points (1 to 10) – To add a little spice to the Healthcare 100 rankings, we add our own subjective ranking of each blog based on the quality of content and frequency of updates.

All four metrics are added to determine each blog’s total score. In the case of ties, the suborder is determined by eDrugSearch.com points. If eDrugSearch.com points are the same, Technorati authority ranking points are compared, followed by Bloglines subscriber points, and finally Google PageRank points.

Rankings are automated and updated frequently, with the date of the most recent update posted under the Healthcare 100 heading.

If you want to suggest a blog for the Healthcare 100 or add your own, please complete this brief form.