Placeknow.com as it is not usual social networking service. Placeknow.com is remarkable portal that integrates society and the city. Citizens look for current events in their hometown, they also are interested in news related to places where they studied and worked before. Apart from that it is obvious that people willingly gather information about their journey. Now it is possible with Placeknow.com. Everybody can get to know various cities. Placeknow.com is very useful for cities, organizations and companies, because website can be used as a tool to promote region. Every city, town and even a small village can show the most beautiful places in their region.