I often see misspelled words in titles and bodies of questions, only to see them spelled properly in the tags. I have to imagine that tags are always spelled right because it's hard to type arbitrary text into the tag box. I also have to imagine that sometimes autocorrect and spellcheck provided by browsers tend to turn programming terms and package names into English words. For example, see https://stackoverflow.com/search?q=magneto
Would it be possible to have some sort of spellchecker that compares text of titles (and maybe bodies) to known tags and offers some sort of correction (maybe red squiggles or something) when there's some statistical probability of a misspelling?
Since this would be using a site's tags, "magneto" would get corrected to "magento" on SO, while "magento" would get corrected to "magneto" on aviation.stackexchange.com.
In theory this could reduce a lot of stupid typos and prevent trivial edits just to fix the spelling of key words.
Note that this is not solving a problem that a user's browser can already solve because browsers ship with English dictionaries, not dictionaries of programming terms. In fact, it's potentially correcting a problem created by the browser (which might have already autocorrected "magento" to "magneto").