I have described elsewhere the problem I see with the participatory web, aka web 2.0 - there are too many different ways to put information into it, resulting in the sharing of that information being fragmented across the users of the various sites - del.icio.us, flickr, youtube, facebook, myspace, ning, digg, etc.
One possible workaround to this problem is what I am using right now to write this - scribefire. It enables me to publish this rant to as many blogs as I care to tell it about - i.e., syndication. So I can reach the readers of my blogspot and my blogs.sun.com entries with the same info.
The reverse (or corollary?) of this is aggregation - collect information from various sites and deliver them to the user - so far this still feels like too much content coming at me from these many sources to be able to assimilate in the few hours a day I have to spare.
This still leaves the problem of proliferation of content, but perhaps that gets solved in web 6.0...
