Social Media Commerce: Customer Check In by Mobile App
Some social media apps reward their users for checking in from smartphones as they go from place to place in the bricks-and-mortar world. This mobile check-in activity is popular with those who connect online. You can encourage people to check in at your place of business.
The current leader in the market is Foursquare, a social geolocation-based application that allows users to check in when they arrive at almost any location. Currently, more than 20 million people use Foursquare, so if you have a retail location, odds are some of your customers are checking in.
You can check in to Foursquare on a plane (with a flight number), at a restaurant, at a bank, in the doctor’s office . . . pretty much from everywhere. Get the word out to your customers!
When users arrive at a location and check in, their friends may be notified of their location (based on the individual user’s privacy settings). Repeat visits earn users badges of honor (in the figure, see a customer's badge for visiting three bakeries) and place them higher in an internal ranking system.
Foursquare allows the user to become the Mayor of a business or spot she frequents by being the person who checks in at a single location most often. This high status is coveted by participants. When someone gets ousted, a scramble sometimes ensues to be reinstated by making another visit.
All this activity occurs using a game mechanism: Users earn points, get discounts, win Mayorships, and unlock badges for trying new places and revisiting old favorites.

Web Design & Development Glossary
AJAX
asynchronous JavaScript and XML. A technique used in web page development.

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API
application programming interface. A set of rules programs use to communicate with each other.

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color stop
A special element that indicates a color to be added to a gradient.

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FTP
File Transfer Protocol. A network protocol useful for transferring files in a client-server relationship.

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HTML
HyperText Markup Language. The predominant language for building web pages.

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HTTP
HyperText Transfer Protocol. The primary networking language for the Internet.

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PHP
PHP Hypertext Processor. A scripting language that works well within HTML.

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socket
A technology that allows remote computers to maintain a persistent connection in order to communicate with each other.

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sprite
An graphic object on a web page that will be manipulated in real time.

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SQL
Structured Query Language. A programming language useful in managing relational databases.

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stateless protocol
An Internet procedure that completely breaks the connection between the client and the server after a transaction, meaning that the next transaction will require an entirely new connection.

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Telnet
A network protocol useful in interactive, text-oriented communications.

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W3C
World Wide Web Consortium. The organization that sets international standards for the World Wide Web.