I copy this here for historical reasons. Notice how Tim didn’t simply point to a specification, he actually pointed to a working demo of what the Web could be. (Complete version can be found on the w3c Web site.)
From :Tim Berners-Lee (timbl@info_.cern.ch) Subject :WorldWideWeb: Summary alt.hypertext Date :1991-08-06 13:37:40 PST (...) Information provider view The WWW browsers can access many existing data systems via existing protocols (FTP, NNTP) or via HTTP and a gateway. In this way, the critical mass of data is quickly exceeded, and the increasing use of the system by readers and information suppliers encourage each other. Making a web is as simple as writing a few SGML files which point to your existing data. Making it public involves running the FTP or HTTP daemon, and making at least one link into your web from another. In fact, any file available by anonymous FTP can be immediately linked into a web. The very small start-up effort is designed to allow small contributions. At the other end of the scale, large information providers may provide an HTTP server with full text or keyword indexing. The WWW model gets over the frustrating incompatibilities of data format between suppliers and reader by allowing negotiation of format between a smart browser and a smart server. This should provide a basis for extension into multimedia, and allow those who share application standards to make full use of them across the web. This summary does not describe the many exciting possibilities opened up by the WWW project, such as efficient document caching. the reduction of redundant out-of-date copies, and the use of knowledge daemons. There is more information in the online project documentation, including some background on hypertext and many technical notes. (...)
You can also check out Linus’ first email presenting Linux.