Romanesko has the scoop on Tina Brown and the craptacular ratings of her talk show:

CNBC cancelled Tina Brown's "Topic A" after ratings that were so low, they failed to register with the Nielsen service. Brown remains undeterred in pursuing her television career and said she will continue hosting the monthly show in front of the security camera and monitor at a convenience store located in the Upper East Side of New York. "I'm going to bring some of my high-powered media friends there. This will let me continue to show what a savvy interviewer I am by using such unexpected phrases as 'thinking outside the box' as I did repeatedly when I spoke with Les Moonves," Brown said.

Romanesko [Poynter]