President Obama apologized to Nancy Reagan for a wisecrack about seances.  He apologized for last night’s thoughtless “Special Olympics” jibe on the Tonight Show.  He has also “taken responsibility” for the AIG fiasco.  Earlier, he took responsibility and apologized for several missteps in the appointment process.

There is a lesson here for every corporate executive.  Apology is an act of a mature leader.  President Obama scores points by separating himself from the finger-pointing, blame-culture of Washington.

There is, unfortunately, another lesson as well.  Apology is not a good thing for a leader to do on a regular basis.

By contrast, President Kennedy famously apologized once: For the Bay of Pigs.  President Reagan made one notably apology: For Iran-Contra.  Presidential apologies work because they are rare.  Most presidents use them as sparingly as reserve chutes.

Mr. Obama’s promiscuous apologies not only run the risk of  him not being taking seriously when he has something truly grave to apologize for (which eventually happens to all presidents).  His style also points to an emerging problem with his presidency.

He is grossly overexposed.

I wouldn’t be surprised to see him next to Big Bird on Sesame Street, or making a guest appearance on American Idol.  His ubiquitous appearances will cheapen the currency of his rhetoric as surely as the Fed’s dumping of a trillion dollars will cheapen the greenback.

Worse, there is no strategy to the president’s appearances.  He seems addicted to the adulation of crowds.  It is a good thing for a president to get out of the closed circle of the White House.  But there should be a more obvious point to his travels.

At a time when the world is at the precipice of a cosmic meltdown, all we really wants to see now is Mr. Obama in the White House, shirt-sleeves rolled up, working on the economic crisis.

If he continues down this path, overexposure will blur out his contrasts and fade him into irrelevance.