"Web 2.0 is not a thing,
it's a state of mind..."
However murky the Web 2.0 trend still is - fantastic, but slightly unstable AJAX apps, processor hungry client side stuff or just huge active communities - the fact remains, Web 2.0 is happening, and it's here to stay.
Take this chart I came across on the Net... More than half the companies here are providing single focus, technology and community rich applications. Sexy ones at that. And more than half have been bought, or are about to be bought by a Search Engine.
Start thinking about it - managing, manipulating and taking care of communities using technology is the way of the future. Share and share alike eh?