I'd imagine people like blogging for many reasons including:
* it's free-form and easy
* it's immediate, i .e. my thoughts on the interweb now
* it's free or relatively cheap (less hosting/domain)
This concept might fly in the face of some of these reasons so market need would be the first thing I'd validate.
Also, I'd likely want someone reviewing my drafts who has relevant domain expertise. So if I write about business, a blogger writing about celeb/pop culture may not be the best fit.
I'm unsure there is a large need, but I may just fall way outside of the target demo so just my $.02. Good luck.
BTW - Agree with JangoSteve that a 12 min intro video is way too long.
But you are right about the categorization of reviewers.
It took 3 minutes just to recap the couple hundred words in the paragraphs leading into the video. You could probably skip the instructions on how to install a Wordpress plugin. Combined with the sub-par audio quality, I just ran out of patience.
I'll probably give it a soon though when I get back to the computer.
* Get a clear simple landing page - take wordy.com as a guideline
* Focus more on repuation / P2P and less on paying in the explanation
* Let customers pay quicker pickup and response or if they insist to have it just reviewed by the "best" of the community
* Intro categorization of users if you haven't already (sorry video too long)