Some people say business cards are dead and while most would agree with that statement and begin to argue that their website is a better way of marketing their business, my question to those people would be, “How do you give prospects your site?”
The same people claim the professional connecting sites such as LinkedIn and other contact management apps have been the #1 cause for business cards to be obsolete. Again, what do you use to give people your LinkedIn site? Those people are wrong. 
Don’t get it wrong though, business connecting sites such as LinkedIn, Ello, FullContact and and even YouTube.com can spread your business faster than a business card can, in my opinion, but you need something to start the fire, something in the form of paper and then the same paper to keep the fire going.