I just stumbled across qlogger.com, which was linked from this excellent post by Phil Wolff. I’d been thinking about the idea of extending the basic idea of blogging into specialized applications like photoblogging, but I think Phil goes one better (and nails it) when he says:
You should be able to define your own structure. The most common use of Microsoft Excel is making lists of things. No reason blogs can’t give similar freedom to define a new package.
Qlogger.com is on the right track. I hope they are planning to expose their API and allow third parties to make specialized blogs of all types. IMO that would unleash a revolution (not to mention become a money machine for Qlogger.com).