How to build a social community website - and what people are really looking for? can you list the f

I am a web designer and developer, wanted to launch a social community website by using my programming & designing skills and wanted to help the people all around the world. Can anybody list the features which people are really looking for? Here is my website by which am trying to help people to grab information as far as they can - but wanted to do the best always. Have a look to the site at - http://www.mavenarts.com