Adobe has so many different products it is so hard to identify which product does what: Live Cycle Policy, CorpShare are a couple that come to mind in the document sharing realm. Buzzword sounded very interesting, but before it could go mainstream Adobe acquired them. It will be interesting to see how Adobe puts all the various pieces together or simply adds one more product to its already long list!
Adobe’s Share service is just a dumping ground for documents. It is still got a long way to go before challenging either MS Office Live or Google Docs and spreadsheets. I tried using it in Firefox and it ended up in a loop where the site was always trying to install Flash 9. I finally switched to IE and managed to use it. The UI is all clunky and flash. At this point, Share sounds more like an announcement of Adobe’s intent to play in this space more than anything else.