During the past few weeks, Twitter has been down or out due to stress. To learn more about Twitter scaling issues read this interview by Jesse Stay. When a service goes down, users will complain. And if happens a lot, they may move on. There was much speculation as to whether they mover to Jaiku (with its newly minted Google money), or Pownce, BrightKite, Tumblr, plurk or FriendFeed.

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This panel is a mixed reality event - taking place both in the room and in Second Life. It is also the launch of the Nonprofit Commons Second Sim - you can learn more about that here.

Description: Nonprofit Commons in Second Life Mixed Reality Event: Panelists discuss their work and the in the Nonprofit Commons in Second Life and the benefits of virtual worlds for social change. This mixed-reality event occurs simultaneously in Second Life and features interactivity between the two worlds.