Have you heard of Citanda? Its an online community application developed by a Nigerian for people of similar interests to come together and share things i.e. post, articles, links, discussions, contents, photo of an amazing events, etc. The application is for android devices and very interesting, you need to see it yourself.
The design is nice and very attactive, no color riot.

Businesses can also use the platform to target set of customers with specific interests, to introduce products, or to gather facts and experiences about services from customers.
Everybody has something to offer, discover yours and people will follow and listen to you. What you have to share determine your relevance on the platform.

Learn more on www.citanda.com or download the app on www.citanda.com/beta/Citanda.apk
Also on www.facebook.com/citanda