This was sent to me as an image, here it is as text (I don't know who the original author is):

• Twitter: I'm eating a #Donut
• Facebook: I like Donuts
• Foursquare: This is where I eat donuts
• Instagram: Here's a vintage photo of my donut
• Youtube: Here I am eating a donut
• LinkedIn: My skills include donut eating
• Pinterest: Here's a donut recipe
• Last.fm: Now listening to "donuts"
• Google+: I'm a google employee who eats donuts

I think they should have added:

• Slashdot: Ron Paul told me to eat your donut

Except that, of course, nobody reads slashdot any more.