Microsoft has incorporated this "feature" into Word and Outlook, and probably everywhere else, and it is absolutely infuriatingly stupid. Just another bit of rubbish to disable. For OP, if he had thought of it earlier he might have been able to sell it to those rich idiots. Who knows.

I suppose in rare (jargon- or abstruse knowledge-heavy writing, and activated only by ctrl+space, etc) it might be useful.