As you just found out iWeb and iDVD have been discontinued by Apple. This is evidenced by the fact that new Macs are shipping with iLife 11 installed but without iWeb and iDVD.
On June 30, 2012 MobileMe will be shutdown. HOWEVER, iWeb will still continue to work but without the following:
Features No Longer Available Once MobileMe is Discontinued:
◼ Password protection
◼ Blog and photo comments
◼ Blog search
◼ Hit counter
◼ MobileMe Gallery
Currently if the site is published directly from iWeb to the 3rd party server the RSS feed and slideshow subscription features will work. However, if the site is first published to a folder on the hard drive and then uploaded to the sever with a 3rd party FTP client those two features will be broken.
All of these features can be replaced with 3rd party options.
There's another problem and that's with iWeb's popup slideshows. Once the MMe servers are no longer online the popup slideshow buttons will not display their images.
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However, Roddy McKay and I have figured out a way to modify existing sites with those slideshows and iWeb itself so that those images will display as expected once MobileMe servers are gone. How to is described in this tutorial: iW14 - Modify iWeb So Popup Slideshows Will Work After MobileMe is Discontinued.
This may be of interest to you: Life After MobileMe.
OT