Okay, I’ve been reading Ray Ozzie’s comments on the creation of Simple Shared Extensions (SSE) — an RSS (and OPML) extension to allow two-way communications over RSS — as well as the FAQ and the spec. It’s all interesting and ovedue stuff, and while a more verbose standard than I would like (why is there no apparently limit on the sx:history element? that thing will get massive in a hurry), SSE is still simple enough to merit a closer look. — and as Mike points out, it will spark companies.
Anyway, I’m a narcissist, so I’m more interested in personal use-cases. I currently use Foldershare to keep the watch lists intact across my various Feeddemon instances. While Feeddemon is integrated into Newsgator for subscriptions, it doesn’t synch watch lists, which, at least in the way I use Feeddemon, are more important than the subscriptions themselves. Foldershare works for this purpose, but this is like killing mosquitoes with bazookas: Far more firepower is being deployed than the task at hand requires. It is easy to imagine how SSE could be used to accomplish the same thing in a much more lightweight, distributed fashion.