You will often find a Flash animation on the right hand side of this site. (By the way, how do you find the site's redesign?). Flash is somewhat ubiquitous on Internet users' machines and browsers; so present that often we don't notice it. It's been used more and more for streaming videos.

Flash 10 has just been launched in beta, which you can download from there. Among other new things you wouldn't expect to see in such a 'passive' (allow me the word) tool, VoIP is embedded. The power it will draw from its new features and flexibility will make it fertile land for great applications. As far as we voice users are concerned, Flash 10 uses P2P for streaming audio and video, along with the Real Time Media Flow Protocol (RTMFP), and implements VoIP with the Speex audio codec.This means that applications, or rather plugins, can be developed that could do the work of Youtube or Skype with lower bandwidth costs. Expect to see programs like this in the future. Adam Fisk digs further into that.