A few days ago, Washington Post media critic Howard Kurtz wrote that people who joke about Karl Rove's divorce aren't “classy”:

Then, about six hours later, Kurtz joked about Tiger Woods' marital woes:

And tonight, Kurtz wrote a string of (lamely) joking Tweets about reports that the White House budget director had a child with a previous girlfriend:

But remember: chortling over Karl Rove wouldn't be classy.

UPDATE: Last fall, Washington Post ombudsman Andrew Alexander wrote about the paper's policy on reporters using Twitter:

A key section reads:

“When using these networks, nothing we do must call into question the impartiality of our news judgment. We never abandon the guidelines that govern the separation of news from opinion, the importance of fact and objectivity, the appropriate use of language and tone, and other hallmarks of our brand of journalism.”

...

It continues: "Post journalists must refrain from writing, tweeting or posting anything – including photographs or video – that could be perceived as reflecting political[,] racial, sexist, religious or other bias or favoritism that could be used to tarnish our journalistic credibility."