Google +1 - Resources Round Up

Hearing a lot about Google +1 in the past 24 hours?  Here's a resources round up to ensure you can find out what you need to know.

What it is: Google's answer to the Facebook "like" button, which will also be integrated into search results and search ads. Currently it is opt-in only, via http://www.google.com/experimental/index.html

Why you care: Anything Google does has the potential to be a game changer.  In particular the integration of +1 into search, could have a dramatic impact on search behavior.  Right now Google says +1 won't be a factor in actual rankings, but that could and probably will change.  It will impact search ad (PPC) quality scores, which means changes for people buying ads on Google.

Google +1 Resources from Google:

• Google +1 Overview
• The Official Google Blog Entry on +1
• Adwords adn the +1 button
• Google Ad Innovations - +1 button
• Opt-in for Google +1

Google + 1 Resources by Others:

• Mashable:
• Everything You Need To Know About Google’s +1
• Google’s Answer to the Facebook “Like” Button: The “+1”
• Ad Industry Execs: Google’s +1 Could Hold Us More Accountable
• Fast Company:
• Check this out: Google's Very Own Like Button
• Search Engine Land
• Google's +1 a Potential Boon to Paid Search Marketers
• PC Mag
• Google +1 is Not a Social Network

Any other great resources I need to add?