From the Richard Dawkins Foundation for Reason & Science Facebook page:
I know I've seen that argument before. Hmmm, I can't quite put my finger on where....
Edited to add: A friend of mine, who's agnostic but has done a lot of study* about world religions because he finds the subject fascinating, gets into Facebook debates with Southern Baptists pretty frequently. (Most of them are people we went to high school with.) He hears a similar argument ("Well, that's the Old Testament...") almost every time the debates get serious--his religious knowledge is so encyclopedic it's hilarious to me that they think they can back him into a corner. He very politely eviscerates them every single time.
*He was once on track for a doctorate in comparative religion, but the stress of moving to a new city for grad school proved to be too much for him and he dropped out, which is a tremendous loss. He'd intended to be a teacher when he graduated and I don't doubt for a split-second that he would've been an excellent one.