Google vs Foursquare vs Geos

There are question about the differences. We will try to answer. Feel free to ask and comment!

There are lots of differences though all these project have similar things.
Foursquare is feedbacks and ratings of places. There are lots of places which doesn't exist already. Checkins do nothing besides growing your rating. There are no functionality to add own services connected to a place.
Google is internet searchengine. Google tries to find relevant information about places in internet, asks android users to publish photos when they were took in some place, asks people to share information about places. Same as Foursquare there is no additional services connected to a places. This is just big directory.
Geos is about in-place activities and in-place services. The main idea is real-time actuality. Google just knows about place but Geos knows what is happening in this place. Place admin can touch place's audience  and communicate with the audience via additional services. Geos is social network where places are similar to facebook groups. And unlike to Foursquare and Google - places in Geos are not only points. They can be polygons, which we call geohubs. This makes possible for place admins to provide additional functionality on the needed area, for example indoor navigation in airport, in-place chat of a village etc.