It's really easy to make a quick check - just copy the word into a Google search box, and hit enter. This will either confirm your spelling, or suggest a correction.
Most now days browsers have this option integrated, cuz if you didn't spell in correctly it will immediately red mark the word, that later user with click of mouse easily change it or to correct it.
Also see many post that use rough google translate from some language to English that is not good bad is small word. This is very bad but it is still something to think about, maybe integration of some translation for for topic or something, but think this will cause only bigger confusion on this.
To be honest the ones that care about something will always check and the ones that dont they will just type and post, simple as that.