If you're already on Foursquare, then you can get a free Pepsi Max 2-Liter bottle simply by syncing up your Foursquare account to a VonsClub Card.

If you've never heard of Foursquare, it is a fun social media network based on your location. You can check it out on your computer and sign up for free, and you can download free. Like Facebook and Twitter, you can update your status on Foursquare, and follow and be followed by your friends!

So once you're signed up and register, all you have to do is wait 48 hours to allow the back end processes to sync up the accounts. Plus, the page also mentioned that you’ll be earning other special rewards beyond your free Pepsi Max. In this instance, you might say that it pays to be on top of technology.