Seven hundred sixty-five comments later, it's still unclear whether, ahem, Barack Obama's campaign is booking for CNN. That's what Fox News host Greta Van Susteren was asking on her blog GretaWire yesterday when the Rev. Al Sharpton pulled out of a 10pm appearance on her show less than two hours before he was supposed to go on, so he could instead pop up on Anderson Cooper 360. His excuse? The senator's campaign asked him to appear on CNN on his behalf.

Nevermind that this is sort of a non-item — guests cancel segments all the time (bookers do too!) for one reason or another, and a phone call from Obama's camp, which Sharpton vehemently supports, isn't a light request. But our favorite part of Greta's complaint is the set up, where she gets away with planting an item out of her duty to viewers: "I debated whether to tell you this or not…but I did promise behind the scenes information here on GretaWire….so here it is." (Not that we're complaining about any addition to a gossip war.)

Let's not forget, however, than Ms. Susteren and Mr. Sharpton haven't always seen eye-to-eye.