Redactor is a very nice WYSIWYG editor. In this post I will show you how to create a redactor form type.

MarkdownDeep is an open-source (read license) implementation of the increasingly popular web publishing syntax Markdown. MarkdownDeep provides a high performance implementation for ASP.NET web-servers along with a compatible JavaScript implementation for client side use.

markItUp! is a JavaScript plugin built on the jQuery library. It allows you to turn any textarea into a markup editor. Html, Textile, Wiki Syntax, Markdown, BBcode or even your own Markup system can be easily implemented. http://markitup.jaysalvat.com/home/

Mercury Editor is a fully featured editor much like TinyMCE or CKEditor, but with a different usage paradigm. It expects that an entire page is something that can be editable, and allows different types of editable regions to be specified. It displays a single toolbar for every region on the page, and uses the HTML5 ...

Use <b> when you want the text to have a different style without contextual importance, but use <strong> when you want the text to have extra importance from a content or SEO perspective. Use <i> to offset the mood of text, but use <em> to make text emphatic.

RDFa is an extension to HTML5 that helps you markup things like People, Places, Events, Recipes and Reviews. Search Engines and Web Services use this markup to generate better search listings and give you better visibility on the Web, so that people can find your website more easily. http://rdfa.info/

http://www.anthonycalzadilla.com/2010/08/html5-section-aside-header-nav-footer-elements-not-as-obvious-as-they-sound/

The new HTML5 SECTION element can be somewhat confusing. If you’ve been building HTML documents before HTML5, chances are you are already using the DIV element to create structural divisions within your pages and then style the pages with them. So it might seem like a natural thing to simply replace your existing DIV elements ...

http://dev.w3.org/html5/alt-techniques/#tree A simple alt text decision tree