The Host Novel@LJ has all of the details:
"We just received word from Hachette Books that Asya Muchnick, Editor of The Host, will be doing a Live BlogTalkRadio interview this Thursday (May 20) at 2:30 pm EST. You can listen to the chat as it airs here. (Don't worry about bookmarking that if you don't want though - we'll remind you the day of!)
You can call in to ask a question during the show at (646) 378-0040. We've been invited to send in questions in advance, however, so if you're worried about not being able to get through or will be busy at that hour, send your questions to us. We'll collect them together and send them back to the Hachette Web Publicist to (hopefully) be answered!
Now, remember, she's not Stephenie. As the editor, we don't know what types of questions she will be most likely to take. Still, she's definitely on the in, so get in your questions! Just leave them as a comment on this post.
For example, I'm planning on asking something like: "Did the plot or any of the characters make a noticeable change during the editing process? If so, what were things like in the original draft you received?" (Perhaps that casts too wide a net, but I think that's one type of question it would be reasonable to ask.)"