I created this webpage for generating TeX code and generating a preview (using mimetex). Some of your forum users might find it helpful. Here is the web address:
Type Math Expressions
I created this thinking I would start my own math forum, but I've decided that it is too big of a project for me. Besides, there are plenty of good ones already running.
This web page, I imagine, would be for your more novice LaTeX users. It is not just a crutch but a good learning tool.
I hope I posted this thread in the appropriate place. Many of the threads here seem to be asking about more advanced LaTeX. My webpage will probably only help with the more basic mathematical symbols.
Please let me know what you think. If you like it or if your users find it useful, feel free to link to it and/or make it a sticky post.