I agree with the claim in this forum post. It is annoying to have all pages javascript generated, clicks hijacked to make some special sauce, and content popping in, up, down or out whenever you hover something. It is a growing mess that will have it "let's rollback and clean this crap out" time, like Google did with its famous blank home page. Another example: trello.com is a very nice and free card tool for small p…
You're an optimist. I'm a pessimist - Google+ is too little, too late. Facebook is already too big to fail, Google+ being here the equivalent of Microsoft's Bing. Facebook won't open up. They don't have than in their DNA, their biggest asset is their huge audience and they'll do anything they can to keep that audience on Facebook -- opening up their platform in a way that benefits competitors simply makes no sense. T…
Someone reasoning like you do some 7 years ago would have said Hotmail was too big, but then they came with Gmail and it was a real break in.
Imagine in a few months, G+ user can opt-in to see their friends' +1 on Youtube's videos in their stream, and for some reason it becomes very hot a feature. Then Facebook want the same, but don't have a Youtube. They "could" add Youtube +1 in their stream using Google open APIs, but then it would be fair for Google to require them to open their API for the reverse, and allow G+ users to have their FB friends' pics in their streams.
This would be a killer feature, because it is really not fun at all to have to go to g+, fb, tw, etc. (not counting Chinese SNSes I have to follow too) and then HN, etc.
In fact, Google Reader was not very far from such a tool, but didn't have the locally generated content's critical mass to move things over, and the interface is/was too "advanced user". Google plus may have enough mass, and had the chance to simplify the UX, by starting from scratch.