Mike Caulfield writes in "Smallest Federated Wiki as an Alternate Vision of the Web" that after three weeks of using our reimagining of the wiki (and really, of the web) that we undermine some of the basic premises of the web; and how good that feels. post 
Mike Caulfield argues for a move from streams of response and reaction to gardens of connections, of intentional, designed, thoughtfully constructed spaces. Keynote: The Garden and the Stream blog.
Federated Wiki Is an Application. It is not a web page or series of web pages. This has some implications on interface and use.