Really sorry – I accidentally deleted a bunch of comments this morning when I was moderating some waiting in the queue. I’ve got most of them in my email, I think, so I will try to re-post them later on. Really sorry if yours was one of the ones that went!
UPDATE: Ok, I think I have managed to rescue most comments from my comment RSS feed (thank you NNW!), but the pingback are gone. If you left a comment and it’s missing, please leave it again. Apologies.