Killjoy.

After early signs he might follow the lead of other presidents and keep his White House visitor logs secret, Barack Obama has decided instead he’s going to post them on the Internet.

This, of course, jeopardizes the popular Washington sport of going to court to find out who’s getting face time with the president.

It’s a hallowed tradition observed over many administrations.

OBAMA/President George W. Bush and Vice President Dick Cheney waged a valiant struggle to keep their logs secret from groups wanting to know such things as who was influencing energy policy or how much access corrupt lobbyist Jack Abramoff was given.

Visitor logs were used to track the comings and goings of White House intern Monica Lewinsky during Bill Clinton’s presidency. And they provided fodder for the Whitewater and influence peddling investigations involving Clinton.

Even Obama, who promised transparency during his election campaign, had been battling lawsuits over the visitor logs before announcing Friday he was giving up the fight.