On my birthday, I received a slew of lovely birthday greetings.By early morning I had stacked up 93 birthday wishes on Facebook — one even included a $5 Starbucks gift card! About 20 strangers digitally congratulated me on Google Plus. A dozen people chirped “happy birthday” to me on Twitter. Fifteen friends and family members sent me emoji-filled birthday wishes over text message. Eight over e-mail. Two voicemails. And one person yelled Happy Birthday on SnapChat.But I didn’t receive a single physical birthday card. It was the first year since I was born that my birthday wishes were all digital.
http://bits.blogs.nytimes.com/2013/08/20/birthday-greetings-now-sent-over-text-and-twitter/