I think the next tipping point will be focused on wikis. We are close to the point where we will no longer have to pick an 'application' to create, open or change a document, any more than we have to pick a particular type of writing implement to do so in the physical world. What that will allow us to do is convert our entire hard drive -- every document -- and all the content we maintain on central servers -- every message and blog post, into a single 'virtual' wiki, a kind of giant tableau of all our stuff, everything we have created or contributed to, and everything created by others we have filed away or bookmarked or otherwise 'taken as our own'.

Dave Pollard