マイクロソフトのrss拡張であるSSE
マイクロソフトからｒｓｓ拡張であるSSE（シンプル・シェアリング・エクステンション）スペックがクリエイティブ・コモンのライセンスで出ている。さまざまなフォーマットのカレンダーと人名録をｒｓｓ拡張を使って編集、共有するものらしい。
Using RSS itself as-is for synchronization wasn't really an option. That is, RSS is primarily about syndication - unidirectional publishing - while in order to accomplish the “mesh” sharing scenarios, we'd need bi-directional (actually, multi-directional) synchronization of items. But RSS is compelling because of the power inherent in its simplicity.
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We’ve numbered the draft specification 0.9 because we have a good degree of confidence in its usefulness based on the prototyping that we’ve done thus far, but it’s certainly not a 1.0 and I would certainly caution against building anything ‘production’ on it quite yet.
