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Not a week (day?) goes by that an athlete doesn't get themselves in trouble for something they fired off on one of their social media accounts. And in the spirit of fairness, it's not just players; coaches have been known to wade into controversy too.

Take Michigan coach Jim Harbaugh, for example. The man speaks his mind in just about every forum. But Harbaugh's brother, John, who happens to coach the Ravens, is still wary of Twitter because, well, it can do more harm than good in a short amount of time.

That said, John also admits to being intrigued by the immediacy of it all. On Monday, he was having dinner with Jim and father Jack, and Jim tweeted out this:

"I couldn't believe how fast people respond to those," John said, via ESPN.com. "Pretty incredible."

So does this mean John might give in and join Twitter?

"Maybe one day it would be fun," he conceded. "I guess it's growing on me, because the ability to communicate that way is pretty interesting. I think college is a bigger deal because of the recruiting thing. It's really probably important for them. In our level, I don't know how much value it has."

Seahawks coach Pete Carroll and Steelers coach Mike Tomlin are on Twitter, though good luck finding anything incendiary or offensive in their observations.

Behold:

"I'll probably have to see what they say," Harbaugh said of seeing how Carroll and Tomlin use Twitter. "I'd probably get myself in trouble; say something controversial."

And that, more than anything, is why coaches, a risk-averse bunch by nature, aren't on SnapFace, MyFace or InstaFace.