clipped from: courtneytuttle.com   

Your Technorati authority rating is simple, it is the number of unique blogs that have linked to you. The authority rating for this site is 94; this means that 94 different blogs have linked to me so far. As my authority rating goes up, my Technorati ranking goes down. Remember that down is good for your Technorati ranking.

Many advertisers will decide how much to pay you based on what your Technorati ranking is.
Since your Technorati ranking is based 100% on links from other blogs, you need to get links from other blogs! Here are some of the easiest and most effective ways to get those links:
Use the D-List.
Use blog carnivals.
Work relentlessly on your site. The more value you can provide, the more you will get linked to.