Here are a smattering of internet firsts, from the very beginning of Amazon to YouTube’s first video. Via Business Insider:
The first picture ever uploaded on the web was posted by Tim Burners Lee (inventor of the World Wide Web) on behalf of a comedy band called Les Horrible Cernettes.

Joe McCambley ran the first banner ad ever online. It went live in October 1994 on HotWired.com and it promoted 7 art museums, sponsored by AT&T.

The first book purchased on Amazon was Douglas Hofstadter’s Fluid Concepts and Creative Analogies: Computer Models of the Fundamental Mechanisms of Thought in 1995.

The first YouTube video posted was posted by co-founder Jawed Karim at the San Diego Zoo. It was uploaded on April 23, 2005 and has been watched nearly 10 million times.
The first tweet was written by co-founder Jack Dorsey on March 21, 2006.

Read more: http://www.businessinsider.com/every-first-on-the-internet-2013-2?op=1#ixzz2RxmI4s3T