Math Authoring Gap and MathUI
Some of this people will be at an international workshop about mathematical user interfaces (submission to works are still open) in July to discuss how users interact with mathematics represented on a computer and related topics.
Folks from Mozilla MathML Project have also worked to solve this gap (like enabling real time preview of LaTeX equations in web browsers) and invite you to take a look at the work they will submit soon which covers nice examples of the new web technologies that can be used to share knowledge.