Google Reader (1000+)

"Cool! But I sure wish it integrated with Twitter, at the very least. And man, it'd sure be powerful if it worked with Facebook. Wouldn't it, now?! But from what I can tell, that will NEVER happen.

Instead, '+1' is going to become Google's version of the 'Like' button from Facebook - the post is very direct about this:

But the +1 button isn’t just for search results. We’re working on a +1 button that you can put on your pages too, making it easy for people to recommend your content on Google search without leaving your site.

Because it's directly tied to Google's most powerful asset, search, I think this move has some serious legs. Site owners will want to put the button on their site - even if they have no idea how or even *if* those '+1s' will aid ranking in organic Google search. I can tell you this: Spammers will have a field day with this one, though I imagine the button will be gated in some way (perhaps to push it, you have to be logged into a Google account). In any case, it's a smart way to leverage Google's core strength."

Source : Google Reader