It's interesting to watch old media dip their feet in the blogging pool, and how each one goes at it. The Trib's Eric Zorn has been at it with his Notebook awhile now, and his colleague Maureen Ryan now has a TV blog (and someday the Tribune will give them permalinks). Jack Mabley, the 89-year-old editor emeritus of the Daily Herald, has his own blogspot, though it's been quiet in recent weeks. And Chicago Public Radio has gotten into the act with a "Pledge Blog" with their current pledge drive.