Fun With PubSubHubbub, Wordpress & Faster Indexation [Real Time. Once upon a time, it took weeks, if not months to get a new page crawled and indexed by a search engine.
Later, the whole indexing process got faster – I found this post from 2007 from a very excited Patrick at Blogstorm discussing a web page getting indexed within a minute. Image – 16bit EPROM by YellowCloud The real time web. Atom. Atompub Status Pages.