GMail is My Twitter Client. Top ten greasemonkey scripts. Facebook Prepares to Compete With Gmail: Launches Messaging API. The Man Who Made Gmail Says Real-Time Conversation is What's Next - ReadWriteWeb. Paul Buchheit built the first version of Gmail in one day.
Then, he built the first prototype of Google's contextual advertising service, Adsense, in one day as well. Now, he's working on a much-watched startup called FriendFeed that he believes just brought to market the next big form of communication online: flowing, multi-person, real-time conversations.