Here is an article from wired.com that explain the h-index and its origin. It’s a fun story and it's nice to know the basic formula of the h-index (h=n means you have published n articles that have been cited at least n times).
I’ve come up with a new metric, the b-index, which describes the impact of said blog. Instead of times cited we are looking at times commented upon. Our blog’s b-index is 6, explanation follows:
We have 32 posts so far with 23 comments going to a single post. Stellar! Ordering posts by high to low comment level we have the following sequence 23, 10, 8, 8, 7, 6, 6, 5, 5 etc. Counting down the line we find that 6 posts have a comment level greater than or equal to six.
Is that good? Who knows! But hey, it’s our index and we set the bar.