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add background with informative reference to Pingback #85

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7 changes: 7 additions & 0 deletions draft/source/index.html
Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,13 @@ <h3>Social Web Working Group</h3>
<p><a href="https://www.w3.org/TR/webmention">Webmention</a> is one of several related specifications being produced by the Social Web Working Group. Implementers interested in alternative approaches and complimentary protocols should start by reading the overview document [[social-web-protocols]].</p>
</section>

<section class="informative">
<h3>Background</h3>

<p>The Webmention spec began as a simplified version of the [[Pingback]] spec. Where Pingback required sending the source and target URLs in an XML-RPC payload, Webmention simplified that to a form-encoded payload, which meant it could easily be used in HTML forms, was easier to work with since more tools exist for form-encoded payloads, and was not vulnerable to accidentally exposing other parts of a system's code via XML-RPC.</p>
<p>Webmention then continued on to more thoroughly specify the details of sending and verifying the request, and expanded to support sending notifications when a source document was updated or deleted. More information can be found in the <a href="https://indieweb.org/Webmention-faq">Webmention FAQ</a> on the IndieWeb wiki.</p>
</section>

<section class="informative">
<h3>Overview</h3>

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