On the scale of absent (Nick Saban) to highly-branded (Butch Jones) in terms of college football coaches leveraging Twitter, new Michigan coach Jim Harbaugh is off the richter scale.

Harbaugh gave everyone a taste of his legendary hard-line competitiveness Friday:

The second-to-last paragraph states: “Where college coaches are restricted from working a camp outside of a 50-mile radius of their campus, we cordially invite your head football coach to be our keynote speaker.”

Harbaugh, as well as several other schools in the Big Ten and Notre Dame, have taken advantage of their program’s bylaws to schedule so-called “satellite” high school football camps, often in SEC or ACC territory.

The latter two conferences have a rule against staging such camps. SEC coaches can’t form a camp outside of a 50-mile radius around their universities.

Michigan, for example, will be staging a satellite camp in Prattville, Ala., on June 5, allowing the Wolverines coaches to see some star high school players that won’t be heading to Ann Arbor, Mich., to attend UM’s on-campus summer camp.

Saban recently called the satellite camps “ridiculous.” SEC commissioner-elect Greg Sankey has labeled them “recruiting tours.” NCAA president Mark Emmert has vowed that the NCAA’s football oversight committee will take a close look at the loophole in the rulebook allowing those camps.

Meanwhile, Harbaugh is taking a not-so-subtle jab at the ACC and SEC coaches who already are upset, inviting them to be keynote speakers at his camp in Ann Arbor — coaching at the camps, of course, is against the rules of those respective conferences, but technically they can attend in that fashion.

My gut feeling is that Harbaugh, Penn State’s James Franklin and others better enjoy these satellite camps while they last, because I doubt the NCAA is going to let them continue after this year.

But it’s hard to fault Harbaugh for trying to draw attention to Michigan, which is way behind the premier programs in the SEC entering the 2015 season. The Wolverines went 5-7 and did not make a bowl game in ’14, finishing with the same record as the Kentucky Wildcats.