The other day I was thinking in doing some kind of algorithm to measure the number of interesting posts in a blog. And after some commments in meneame , a digg-like Spanish site, I followed one of the blogs in the user profiles and after scanning it’s content I realized about how to close the formula.

This is the final formula to calculate the percentage of interesting entries in a blog:

( V + NIE ) * 100
___________________________
Total blog entries

Glossary:
V=Silly Youtube videos
NIE=Not Interesting entries

As an example we can have a blog that has 45 entries with YouTube videos and other 15 without interesting content of a total of 80 blog entries:

( 45 Vid + 15 NIE ) * 100
_______________________________________ = 75 % EPI

80
The result would be then a 25 % of Interesting Entries in the blog. (EI’s)