Instagram launched Oct 6, 2010. I Instagrammed the Wikipedia article stating that (adding groovy colors), and thought about posting the pic on Twitter and Facebook with the text:

Happy birthday, Instagram, launched this day in 2010

With the article link.

Sound OK? 


--
Jeff Elder
Digital communications manager
Wikimedia Foundation
704-650-4130 
@jeffelder
@wikipedia
The Wikimedia blog