Dude, it's a bit too premature for adsense, dontcha think? Also, your summary of the project is too much jargon:

"It's technically a Wiki + social networking site, and semantically a crowd-sourced review + social news site."

Put that in active tense:

"Read, edit and publish news and important stuff. Contact others and talk about stuff"

Also, entries have the URL linked to the source. You might not wanna do that. I recommend a URL from the front page should go to a summary page, where people can read and post reviews, and there should be a big button/link where they can go to the original.

Having a separate page will help you with .. err, figure that out, I'm not sure I want to go there now that I remember the adsense ;-)