Marcy Wheeler has a post up looking at David Letterman, Washington Post media critic Howard Kurtz and the issue of “discretion”... on Twitter.

Wheeler notes:

On September 30, several days after news of the WaPo's new Twitter policy came out, Howie Kurtz tweeted one of his last meta-tweets on the policy, calling for “discretion.”

WP has no plans to monitor tweets as far as I know, so there's no czar in charge. Grownups should just exercise a bit of discretion...

Three tweets later, Howie set off on an obsession the likes of which we haven't seen since 1998.

The obsession in question is over the controversy surrounding CBS' David Letterman of late. Check out the rest of her post for all the details on Kurtz's Twitter obsess...err “discretion.”

Shameless Plug: You can follow me on Twitter @KarlFrisch. My obsession happens to be media accountability, not Letterman.