Harold,

I think Jason's comment above comes closer to how I think about 3.0: ubiquity.

The model you present, Wolfram Alpha, is another form of content. You ask a question, you get an answer. It's not a human answering you -- it's a human-readable answer. WA is more like AI than anything else -- a series of algorithms that translate your human language query so that you get the result from ultimately a database. To me, while maybe it's a bridge to something bigger, WA is still kinda 1.0.

The idea from my perspective is that when I turn geo-tagging on in Twitter, that "location" variable it updates means the same thing in Google Latitude, which is automatically updated no matter if I update it in Twitter or take a picture with geospatial information -- and it updates all the services I belong to -- that idea, notionally, is 3.0. At that point, the internet is no longer wrapping us around the content, but the converse -- it's wrapping the content around us. My friends exist beyond Facebook or Twitter or even our own blogs -- we're simply friends, recognized no matter what playground we choose to play on.

We can kinda do this now, but the effort and ultimately cost of maintaining and managing presence on all these different services is not that unlike the amount of effort it takes to manage LMSs that aren't linked to other enterprise products -- and go a step further -- the amount of effort it would take to migrate an employee's learning data from one company to another (let alone a student's transcripts from one school system to another).

The persistence and ubiquity of "you" is 3.0.