Get flash to fully experience Pearltrees
There's a whole class of 'Web 2.0' technologies that have emerged recently which have some common features: They solve a simple problem, they do so in a decentralised way and they stay simple. As examples I'd quote things like XFN , OpenID , oAuth and even things like RSS and Atom feeds . They start off by solving a particular use case, and stay as simple as possible (or at least should - I'm looking at you OpenID). The latest such technology to interest me is oEmbed , via a blog post by Ben Ward . The name is a bit cryptic, but the use case it addresses is one of embedding content from one site into another .