The popularity of mobile computing gives rise to smartphones and other handheld devices that enable users to stay connected on the internet all the time.  The high demand of mobile devices that let users access the internet has also paved way to another internet trend – the checking-in at local areas or any places (i.e. bars, restaurants, hotels, airports, etc…)  using location-based social media sites. Popular example of location-based social media networks are Four Square,…