You should change your logo to η , otherwise you're going to be getting this question over and over. At least the hint in the logo may forestall some of it, and if not you can point people to it and give them a little test.
I don't think it will matter. Google misspelled googol. Flickr misspelled flicker (that one was probably on purpose though). If N Reduce hits it big, no one will care about that and they will recognize it as a company that works.
Edit: I just noticed Chrome doesn't have googol in it's spell checker dictionary. I wonder if that is intentional.
