Here is 4 of the best/scariest mobile social networking applications currently in development for the Android platform.
NavXS
Navigation Exchange Service (NavXC) enables you to build a network of online contacts who’s positions are continuously tracked and exchanged between each client. This allows the user to track the movements and whereabouts of their contacts at all times – in real time and in relation to their own movements.
Other options include the ability to define ‘Locations’ and share them with other users on your contacts list. These shared locations can be used for example to ‘Map Bookmark’ a new bar you’ve just found enabling you to both share this new discovery with others and also to keep a note of its location for the future.

Read more on: navxs.com
ShoutEm
Shout’Em is an application on which users can quickly and easily create their own mobile social networking service.
The Shout’Em platform can be used by anybody, whether you’re a large corporating looking to provide a new service for your existing user base or a single person wanting to build up your own community for friend
The idea behind Shout’Em is to allow users the ability to build their own social networks without the need to worry about technical details, scalabilty etc. Shout’Em provides the tools and services to get you started without any of the headaches.

Read more on: shoutem.com
KudoStar
KudoStar is a social rating system for Android, allowing you to connect your contacts and favourite locations. The points system places positive and negative KudoStars on these places and contacts which can then be shared amoungst other Android devices and also between other social networking websites.
KudoStar also uses Google’s open social platforms aswell as Facebook’s F8 to virally spread this collected data with other users.

Read more on: kudostar.com
Commandro
Commandro is a geo-centered social networking application which allows you to keep a track on the wherabouts of your friends. Commandro has many built-in features that give you the options to set alerts for specific friends and activities, for example you could setup an alert to notify you when your friend Jane appears within a specific radius of a designated location.
Commandro will even continue to run in the background when the user interface is not running, this enables the application to still gather and report the necessary data. Once the UI is re-started this data will automatically be updated into the system.
Other features include, instant messaging, an invite system and a favourite places bookmarking option.

Read more on: commandro.net