The internet is bombarded daily with new apps (app is the short term for application) that are geared towards new technology, new software systems, new process systems and new marketing tools. They are all focused on winning market share with their new apps. This focus is driven by one main objective which is to make money or to make even more money.
Facebook, Twitter, Google, Skype are some of the killer apps that took off from the beginning they were launched. They all have hundreds of millions of registered users logged on daily. With this kind of captive audience, their websites become marketeers dream domains. That is why their main income is from advertising space on their websites.