My own theory.

Yes, I've got a theory concerning the amazon ad at the bottom of the plog. Yesterday it was presenting plog-readers with three items to shop for: series 1 and 2 of Shameless, and a CD called Roger Bobo - Tuba Libera. If you remember, the idea was that a very sophisticated software program at amazon analyzes the editorial content of the blog and suggests items that it concludes will be relevant to people who find themselves here. As far as I understand it, no human agency is involved.

I think there are two possible reasons for the Shameless recommendation. 1) The software has very cleverly worked out that I am a shameless self-promoter of my novel Taking Comfort. Or 2) it's all because I've been visited by, and have mentioned, the anonymous blogger Shameless. As for Roger Bobo, obviously the software thinks that because you're interested in roger's plog you will also be interested in Roger Bobo. And presumably anything by any bloke called Roger.

It should have known better. After all, the only Roger-related product you're interested in is surely this one.