Hi!
I did some looking through the threads and wasn't able to find the answer.
I've just been talking to some SEO guys and they raised concerns about the image resources of the site not reflecting the domain mapping. For example, here:
http://adventure.everydaycalifornia.com
The other thing is - how do the 301 redirects work on the backend in terms of the site?
They were also asking - if we have a client who had an old site elsewhere, add them to our multi site and then do the domain mapping... is this effectively telling Google old site -> multisite -> domain mapped site?