So far, we have known that the application of the Geolocation. It could unblock Facebook website effectively. But it is mainly rely on the database it gathered. And the more it gathered, the faster it will unblock Facebook website. The main features could be showed below:
Managing Web sites
In the mean time, it could be still regarded as a managing tool to manage the websites .And it is doing it very well to track the geographic distribution of visitors to the site you wanted to visit. Besides satisfying general curiosity, advanced Web sites can also dynamically change the content shown to each visitor based on their location. These sites may also block access to visitors from certain countries or locales, such as the access to Facebook.
Finding spammers
The spammers is the last thing we want to meet during the scanning of the content we want .It seemed unavoidable to us .But now, with the help of the Geolocation, you could know whether there is the spammers on its website. And it would save your time on the information you want to get and you won’t get harassed online by those malicious instant messages which wanted to trace your IP address.
Enforcing the law
This feature has shown that it is legitimate to use and search for the resources to unblock Facebook websites and the Recording Industry Association of America (RIAA) and other agencies may use geolocation to find people illegally swapping media files on the Internet, although typically they work directly with Internet Service Providers. It is really powerful at all.
Okay, now let’s talk about the way to create the Geolocation database. Even though it is a little hard for us to understand it’s working principle. Several online services would allow you to search for the geographic location of an IP address by entering it into a simple web form. There are two kinds of popular services for the users to choose on the internet .They are Geophytes and IP2Location.
  Each of these services would utilize a proprietary databases of addresses based on Internet traffic flow and Web site registrations. The databases were designed for use by Webmasters and can be purchased as a downloadable package for that purpose.
  Regularly speaking, we could use the WHOIS database which was not designed to locate IP addresses geographically. WHOIS tracks the owner of an IP address range (subnet or block) and the owner's postal address.