Predictions from Thijs van der Vossen
The future will be simple, open, informal, standard-compliant and in reverse-chronological order.
No matter how you call it, blogging, weblogging or personal publishing will become the most important way of sharing information and managing knowledge.
Wikis will become the most widely-used groupware and collaboration tools.
Web standards usage will grow as more and more people will be accessing the web using an ever increasing range of browsers and devices. It will not be long before mobile phones include talking browsers by default.
Everything will support and everybody will use content syndication and news aggregators.
The semantic web will happen. It will happen in a big way.