Google is working on an update called Caffeine, which will increase the speed at which it indexes content.

This could be a step toward Googles incarnation of realtime search. Facebook has just started rolling out its own realtime search feature, much like Twitters, which has been around for some time. Facebook has also bought FriendFeed, which already has a good realtime search feature that searches content across many social sites, based on what its users share. So here we are talking about the latest trend in search, and notice that Microsoft and Yahoo, the other two besides Google that make up the traditional big 3 search engines, were not mentioned.