They have obscure inside jokes, such as "i liek mudkips" and "pool's closed". They come together in large group events like ROFLcon as well as virtually on sites like 4Chan. They often make the claim that females do not exist within their ranks, though evidence suggests otherwise. They worship the Flying Spaghetti Monster, Google, and Longcat. They - we - are not a cult, we're the internet… or are we? Wikipedia (say what you will about it, I like it) defines a cult as "a cohesive social group devoted to beliefs or practices that the surrounding population considers to be outside the mainstream." So, do you feel that the internetters fall into that description?

Big websites have had microformats, which are machine-readable ways of storing data in HTML, for a long time. So far, the only thing I've really seen come of this is a few choice addons which could, for example, add a Facebook user to your Outlook contacts. However, Mozilla has just released some details on a project it calls Ubiquity which blows away all the existing uses.