Hi TW,

I'm assuming this is what you're Looking for and what you Need to get started...

But Keep in Mind...

Many Blogger's of your description usually Charge misc. fees (some Big $$$'s in many cases which is another idea to think about too!) and offer a variety of Review type packages as part of their Blogging business model and Monetization revenue stream...

So Get Creative and Think out of the Box before you proceed on this one...

Newsworthy PR... And other Buzz related PR stunts including a variety of other ideas from The Most Popular PR bloggers might Help get you a few Freebie type Reviews...

Here you go... Keep reading down the page and on to the 2nd link I've included...
http://www.readwriteweb.com/archives...heat_sheet.php

Find The Most Popular Blogs in Your Field
http://www.readwriteweb.com/archives...logs_redux.php

Here's another Blog Marketing method to Spin around and Work into your Niche idea and others...

How To Market Through Other People's Blogs:
http://www.sowpub.com/forum/showthre...brokering+blog

Best of Luck and let us know how things go...

Bet a well put together Case Study on this subject would give you another Great Hotsheet info product to Sell in the marketplace in Multiple formats...

You can start paying me when the Big bucks start rolling in...

Phil