Jetpack, A complete Pack

I have used this plugin at my blog and found it to fulfill all my major requirements. The good thing is, it helps to cut short load of plugins installed for various purposes. One plugin for all your needs.

[Update: The sharing buttons do not appear on pages. I have tried multiple themes but the problem persists. As a reference, on http://androidpicks.com/about/ the share buttons do not appear although I have enabled them for this post. Same is the case for other pages on my site. http://androidpicks.com/ Kindly, look into this matter.]