Yes, this may not be specifically an iWeb concern as much as it is about the web hosting services of MobileMe, but this is a very big concern for many people using and paying for this service.
I use the MobileMe services to publish galleries for home and for proof galleries for my photographic business. I have invested a lot of time and effort at creating my professional site using iWeb and Aperture.
For Apple to not provide any information other than to say that MobileMe is cancelled, is unacceptable. We pay good money for this service. Many of us have been using this service since iTools, through .Mac, and continue with MobileMe, wading through the different re-branding efforts. I paid the money for the ease of use, the ability to change my site whenever I want, and for dependability & reliability.
While other options may exist for people to publish and host their sites, we've paid for this service, and I don't think it's unreasonable to expect better proactive communication from Apple to its continuing customers. A little loyalty the other way wouldn't hurt! Apple's leaving us in the dark, and potentially is going to, as another poster put it, "pull the rug out from under us".
I've been using Macs for a long time, and it's seeming more and more that users have to incorporate work-arounds to get things to work properly. From my experience with Apple products, this isn't the Apple way. I chose to work with Apple computers because, as Mr. Jobs said the other day, "it just works". Well, from the information that Apple has formally provided, that is not the case with web hosting, and not the case for my perfectly functional iPhone 3G, which won't work with iOS 5. I know the iPhone is for another forum, but to see my iPhone 3G capabilities become obsolete because Apple doesn't want to include it (maybe it will force some 3G owners to buy newer iPhones) is very disconcerting.
Throughout typing this post, I've been on the phone with AppleCare support, and with MobileMe support, both of which had little to no information on this matter. I was told by one support advisor that he was "pretty sure that web hosting will continue", but couldn't provide anything more clear than that.
I feel that Apple's really dropped the ball on this issue for what are arguably it's most loyal of customers.
Very disappointing.