Today only, Rosetta Stone cuts up to 30% off a selection of its Rosetta Stone language-learning software sets during its Cyber Monday Sale. (The price should drop automatically; otherwise apply coupon code "rsholcm12".) Plus, all orders qualify for free shipping. That's one of the best discounts we've seen from Rosetta Stone this year. (We saw up to $100 off a similar selection of software sets in June.) Sales tax is added where applicable.