This may the simplest, yet most effective way to get people to "like" your brand’s page on Facebook. There have been a lot technological advances to vending machines lately and brands are using them to their fullest marketing advantage. Recently we showed you Diet Coke’s "World’s Thinnest Vending Machine" and Coca Cola’s "Small World Vending Machines." In true competitive fashion, archival Pepsi has released its own vending machine that keeps things simple. "Like" us on Facebook and get a free Pepsi. It was introduced at a Beyonce concert in Antwerp, Belgium and it was a huge hit. Pepsi currently has over 16 million Facebook followers. Look for that number to increase as these vending machines are introduced in other countries. (Via)