I would love to see a "Google Hotpot" type system integrated into the search results. Instead of a stupid fucking +1, integrate FB connect into Hotpot and let people post reviews of sites, just like you can post reviews of Places.
The Google Toolbar should let you "add a review" of a specific page or site right from your browser, which would go right into the system. IE if you are on a thread on WF that is selling very high quality copy, you could "review" the page within the Google Toolbar, which would get added to a Google Hotpot type system. You could then share your review on FB/LinkedIn/Twitter.
This is a much more valuable (and functional) social feature that G could implement.
I bet that is their backup plan if/when +1 fails to take hold.
On the subject of relevance, I just had an epiphany which leads me to believe +1 can't ever be as accepted as Likes...
When you 'Like' something, your facebook profile records it, and your FB profile is shared with people you tend to trust. -Ppl generally only have one FB profile and it's like an investment to them that they are always grooming.
Meanwhile, when you +1 something, your Google profile du jour records it. Nobody is putting much effort into any one google profile, and at any time you could be logged into 1 of any of your google accounts... Meaning that your results will be different in the Serps for each account you log on with.
Worse yet, most google accounts such as your gmail account will not be 'connected to' many people like your mother & best friend whom you trust. -Your work gmail address is likely to have a lot of Indian coders connected to it, in our example... So do you really want to get their advice in your serps?
Facebook Likes show what people who you TRUST like. Google +1s show what people who are 1 degree of seperation from you liked... Per g account you're logged into at the time.
Bottom line: No matter how popular the +1 badge is on pages across the web, people won't be clicking on it 1/10th as much as a Like button.