It is heartening to note that you have implemented WYSIWYG editor, with insert image / flash option, based on our suggestions, like http://www.question2answer.org/qa/2638/what-are-the-top-priorities-for-version-1-3-1-4#a2645.
However, as of now the WYSIWYG editor on this (q2a) site is implemented only for the text areas corresponding to "question" and "answer", not for "comment". Can you please enable WYSIWYG editor, even for the text area corresponding to commenting?