Add Yahoo as a preferred source to see more of our stories on Google. It would come as a surprise to more people than you think that "roomba" isn't the universal term for a robot vacuum. It is, in ...

Add Yahoo as a preferred source to see more of our stories on Google. It might come as a surprise that "roomba" isn't the universal term for a robot vacuum. It is, in fact, a capital "R" that denotes ...