I want to know whether someone knows of some plugin which can insert question answer functionaily just like MakeUseof? I want this functiolity in an existing site, not some standalone theme floating around in the market. Or any detailed explaination how with multiple plugins this can be acheieved. I want much simmillar facility as on the makeuse of site. With tabs like most popular, unanswered etc.
there are a lot of plugins out there to add this kind of functionality and the one that i would recommend is Question and Answer Forum which will get you closes to the example you link with no hard work.
Take a look at Pubble. Pubble is a real-time Q&A plugin that lives on websites, blogs & Facebook pages to crowdsource the best FAQ's for anything. With Pubble you add a code snippet to the pages that you want to enable Q&A on. The Q&A's from across your site are then aggregated into a killer FAQ page that looks like:
Threaded Layout (similar to MakeUseof)
Tiled Layout (pinterest'esque style)
The Pubble WordPress Q&A Plugin includes the following features:
Hope this helps.