I had a chance to speak with Apple senior director for MobileMe product marketing Chris Saito, and he explained that e-mail is the service's most popular feature, followed by sync and iDisk use.

The iPhone's release has increased the demand for sync, but it also increased the use of the photo features too. More people are apparently uploading pictures directly to MobileMe from their iPhone. My general lack of interest in the photo-sharing features aside, I've done that myself.

For me, having push working is a huge thing that allows me to work anywhere, anytime and always have access to the most up-to-date information. The different ways my own family uses the service shows there is a little something in MobileMe for everyone.