One project I have had in mind for many years is a direct two-way, user-to-user communication protocol or user convention that only uses HTTP request headers. One benefit would be easier-to-write clients and logging servers. There would be no need for the complexity of, and hence third party control over, a "web browser", nor the need to learn skills (HTML, CSS, Javascript, etc.) to develop and maintain a website. Users could communicate and transfer small data directly via sending and logging HTTP requests.<p>If one is a avid reader of HTTP server logs, one might conclude there is a susbtantial amount of text being transfered over the internet via HTTP headers. However, almost all of it is intended for use by persons other than users. To me, as a user, this seems like a waste.<p>Others have demonstrated how any bits can be transferred via a variety of methods, e.g., <a href="https://web.archive.org/web/20001207014600if_/http//decss.zoy.org/" rel="nofollow">https://web.archive.org/web/20001207014600if_/http//decss.zo...</a>
That included NNTP or e-mail headers, but did not mention HTTP headers.<p>Poetry via HTTP response headers. It's a start!