Every so often people ask "can you add spell checking ability to . . . .etc etc" and I say 'no' because there is so much processor overhead and the checkers i have seen are clunky.
It then dawned on me today, why on earth is spell checking not built into the browser? That way it does not have to be done on the server and every site would automatically have spell checking as it would be site independant? It seems like such a simple and great idea. Or am I missing something?