I think that this group (and all the native English speakers who simply type sloppily) could really benefit from a built in spell checker.

Even as a native speaker who considers his spelling to be impeccable (mostly because he's a pedant :)), I think that this is a good idea.

Just imagine, when submitting a question, next to the "Preview" button, there is also a "Spell Check" button. Alternatively, don't even give the users a choice. When previewing a message, automatically do the spell checking, and highlight the misspelled words.

The first half is a good idea. I don't like the "automatic" part, because it would more than likely utilise JavaScript -- and I like being able to utilise all of PM's functionality in a browser that has zero JS support, like ELinks. That and my opinion on JS ... well ... :)

Of course, you'd have to find a convenient way to skip all of those things which one commonly says on PM, like pieces of code and Jargon. I don't want to have to select "Yes, I mean TMTOWTDI" (remember, not all browsers have a mouse interface, or someone who can use said mouse) when I type TMTOWTDI.