Glad you find it interesting ..
 So the idea is to use some of the HVC destinated for bounties or that the HVC community donate an amount of HVC to make the deal with groupon. At the groupon website www.groupon.com they could offer for example 10, 20 or 30 HVC (40% discount for example). to each user that buy the offer and sell the deal as a big opportunity and chance that this new crypto-currency become in the future the next Bitcoin and that the price could increase exponentially. The offer would describe how to download the wallet, sign in into an exchange (mintpal) and receive the coins.
 The advantage of this is that , whetever people sell or kipp their coins immediately after their purchase them is that you get access to hundreds of thousands of interested people,views and in the process "educate" them into the crypto-currency world.

Im aware that groupon takes 50% of the price they sell and that they expect an address and something they can hold to.
I believe this could be a huge advertisement system for HVC and the crypto-currency world.