One thing I have in mind would be a microformats/AJAX/xmlrpc/API/etc. powered Wiki with focus on ease of use and service integration. The SemanticWiki implementations are heading in the right direction, but they still feel more like proofs of concept and not really usable in terms of usability.
That said, for the moment I decided to switch from one evil to many small little devils. Here’s what I use for PIM for now.
Yep! read on ….