I asked the same question and got a couple of responses but there really hasn't been much discussion on this. I did try to drop in some of the html code into a blogger site when you go into the template area. I know nothing about HTML but what did occur was the general image of the iweb theme did appear on top of my old blogger site but not all of the photos came along for the ride. I'll go on a limb with this and hope I'm not way off but until someone who knows what they are talking about can verify this, I would take this with a teeny, tiny grain of salt:
You could probably integrate the theme of a iweb site into blogger but to get the blogger functionality into the site, that may take a bit of HTML programming skills - such as implementing comments, photos, and how new blog entries would be insterted. As I posted elsewhere, I'm a little less concerned than most about comments as should i make a site, it would be mostly a travel blog with photos, videos and perhaps some ramblings on places I've been but my biggest concern is .mac - it seems absurdly slow and I'm really not sure if I uplaod more than 3 or 4 travel videos that i'll have much storage space left - 1GB these days seems like a lot but it really isn't.
Steve