What is there to say about whatapp. whatsapp has covered the market as such, even if its competitors are inventing as many smileys they can invent, but still majority people use whatsapp as their morning alarm and as their night lullaby.
Features you all know but the algorithm or whatever they might be using for last seen, picture sharing, messages, all are best.
btw that time not that past that we used to use MMS:-( and now a days, you want to send what you are having in lunch, click n send, what you are wearing for party, click and share.
everything is just a click away.
This application helps a lot for busines man who can see everything without going anywhere, you can choose products and make selection for almost everything and those things are just a click away. SHARE PICTUREs n VIDEOs in FRACTION OF TIME.
What a Revolution.:-)