Google’s CEO, Eric Schmidt, on what comes after “Web 2.0.” He defines 2.0 as AJAX (xmlhttprequest) architecture. What comes after— I refuse to give it a number, will be mashup widgets spread virally through official or unofficial social networks.
The interesting point is that it doesn’t matter where, on what page on which site, something is. A store must be in one physical location, that’s not true on the Web. It could be everywhere. Applications don’t need to live anywhere in particular either. The low barrier to entry means there will be lots of creativity.
Identity, authentication and authorization issues will be the friction point that must be overcome before there’s wide-spread consumer acceptance. No one wants Web apps everywhere with multiple logins.