I don't know about other people, but keeping up with Web 2.0 applications is a full time job - you could easily spend your entire working day trying out and using things like Flickr, Writely, etc.
However, something tells me JotSpot might be on to something. In short, its a free, Wiki creation and management tool (though you do have to pay for it if your user and page numbers go above certain levels - even then, the charges are hardly onerous).
So why does it seem quite good? Namely because it does make it v. simple to get your own Wiki up and running. The promise of collaborative working via the web has been with us since the beginning - but no one has really cracked it - perhaps, that is, until now.
I've only had a brief play around with it - but it is easy to see how this could be put to good use - it's like Lotus Notes for Web 2.0 (albeit a much simpler and way cheaper version).
Dennis Howlett has long touted the benefits of the Wiki approach - I'd remained more cautious because I didn't think the tools for building and managing were simple enough - but JotSpot certainly seems to be making a good fist of it.
If anyone else out there has begun playing with JotSpot, I'd be interested in their comments.