Some of the companies adopting social networking, RSS, blogs, wikis, mashups, podcasting, and widgets will be presenting at the Web 2.0 Expo show this week.

Desktone plans to sell "desktops as a service" through service providers like Verizon Businesss and European and Asian carriers; IBM is a partner.

On the same day that Apple posted the Software Development Kit (SDK) that third-party developers can use to create image editing plug-ins for Aperture 2.1, the first image editing plug-ins from third-party developers have arrived and several others are expected to appear shortly.