The term web 2.0 seems to be everywhere these days. It seems to have a floating definition -- meaning that anything new on the web seems to immediately get tagged as being web 2.0. This is great for the marketing and sales folks but can be generally confusing for most of the end user population.
A neat web 2.0 video was forwarded to me recently. I think it nicely captures the concepts behind this new craze and how the use of connected social networks is changing the way we share information.