You shouldn't release a product without support for IE. As the most popular browser, you should build to support it first, then others after.
Eliademy now fully supports IE 10.
Eliademy utilizes a lot of great open source technologies. Unfortunately, Microsoft for years (decades actually) was building a browser according to their own interpretation of common standards (see Non standard extensions in http://en.wikipedia.org/wiki/Internet_Explorer). Due to this we can’t unfortunately offer support for earlier versions of IE.
founder & CPO