2.0 is not about a switchover date, it's functionality, or even philosophy. Mid-90s forums would be understood as visionary betas of Web 2.0 under this terminology. I concede that Orange Forum is definitely very early 2.0, possibly even very late 1.0, but it it most definitely not "as 1.0 as you can get". That would be static websites with at most a guest book and/or email form.