As spell-check evolves, what are we losing?

Spell-check has been around for decades, and despite some improvements, it still leaves a lot to be desired. Simply put, it doesn't always know what's best. On the iPhone, for example, the autocorrect feature is simply blunderful. And it still can't really help us when we type to instead of too.  Ginger is bringing spell-check to the next level. Not onl…