Describing a company or concept as "Web 2.0" is so, last half-decade. Nevermind that most people still haven’t heard the phrase. If you don’t believe me, go ahead and poll your office or family: unless you’re not allowed out of the IT dungeon or your family all work as tech-bloggers, my guess is that they haven’t heard or don’t understand the term.
This isn’t really surprising. If you hear about a "new internet phenomenoon" on mainstream news, the chances are it’s either on it’s way out or is so firmly entrenched as to be unremarkable. For a perfect example of this, look up ‘Facebook’ in a national publication and note the language used to describe it’s shiny-new cover–regardless of the fact that most people reading this blog will have been on Facebook (or gone off Facebook) at least a year ago!
It even now seems that there may be a financial impact on describing your new startup as "web 2.0". According to Mashable!, several VC’s are stating quite clearly that they won’t back Web 2.0. I have also noticed talk of bubbles breaking and ‘meteoric rises’ with the implication that it won’t last very much longer. So many potential break-throughs won’t see their funding if they’re too 2.0.
This phenomenon is firmly entrenched in ‘techy’ social networks like Digg. When I dugg a news story about the semantic web, I noticed the overwhelming majority of comments were along the lines of "semantic web is so cliche", or "Watch out, here comes Semantic Web 2.0, Run!".