Looking at the picture - with the tank, the man, and the choice of an orange-colored background - I would have guessed this is related to Newgrounds. And after reading your comment, my assumption has been proven right.
Nice. I like how you did Tank Man - it is a much different, much more muscular way of how he is usually depicted in the site. He definitely looks ready with his pose and expression. With those muscles and attitude, I feel confident that he's going survive whatever the tank's going to bring unto him.