I think this is a good move for Apple. I am an avid Google user, but to be honest, they have too much of my data and I fear for my privacy. The problem is Google services are just awesome. I have GAFYD, push email on iPhone, I use google search, voice, maps, finance, everything.
I wish Apple Mobile Me supported @yourdomain - I would certainly pay if I could use their MX servers for my mail.
I like Bing (dumb name) on the iPhone, and I have slowly been using it on my mac. I hate to say it, but I think my privacy is safer with Microsoft. Apple needs to distance themselves from Google.
Does anyone know of a good alternative to using Google Apps for your domain in terms of "email"? I want push email, calendar and contacts that can sync across devices (online, mac, iphone) like google. I don't think it exists.