Minneapolis ad agency Campbell Mithun is to select its next bunch of interns based on their tweets. This is so bound to catch on.

It plans to hire 13 summer interns based on an application of “13 Career-Launching Tweets” sent between the dates of February 13 – 25, 2011.

So that is 13 chances at 140-character ago to show what they have got (that’s 1820 characters if you’re struggling to do that in your head).

According to Debbie Fischer, vice president and human resources manager for the agency: “Submitting an application via Twitter supports the digital and creative nature of our business. We anticipate a lively and interesting social-media exchange.”