I’m going to wager it’d be a sound business decision for Google to try and buy LinkedIn.
It’s a gut feeling – I have no concrete evidence; merely a hunch on some small cues.
Google’s foothold with business services still needs help, LinkedIn can provide a multitude of deductive ‘connections’ that they probably couldn’t formulate themselves (Due to a lack of a LinkedIn equivelent).
Google has been really ramping up on how serious they want to be taken as a service provider for businesses. They could really use something like this to give them a business community boost – and they’re not dumb enough to re-create the wheel.