Facebook announced yesterday that it is taking a number of dramatic steps that would all add up to serving 1 billion "like" clicks from visitors to sites around the web, within 24 hours. Many people are concerned about Facebook's growing dominance around the web. One group of high-profile New Yorkers has launched OpenLike, a "very alpha alternative to Facebook Like."
Saw this via @cdixon's tweet early and instantly thought it was a great idea. Not so much because of the "stop facebook" meme (good luck to facebook - smart move with FB Like - it's forceing others to up the ante!), but because it's such a clear example of a crowd-sourced, shareable public good.
There are tons of problems (spam, how to figure out which groups of people like what, how to get adoption etc.) - but all those seem solveable if the core premise catches on.
Taken to the extreme you could re-organise the web's data (and more) with this.