これから早速試してみたいと思います。もしかしてMobileMeキラーとなる？
Google Mobile - Sync
以下、上記サイトより抜粋。
Synchronize the built-in calendar and contacts on your iPhone with your Google account.
* Get Google Calendar events on your device
* View multiple Calendars in different colors
* Synchronize your Contacts with Google
* Have changes pushed directly to your phone
Features
Synchronize your contacts. Get your Google contacts quickly and easily to your iPhone. With Sync, you can have access to your address book at anytime and place that you need it.
Get calendar alerts. Using your iPhone's native calendar, you can now access multiple Google calendars, and be alerted for upcoming appointments with sound or vibration.
Always in sync. Your calendar and contacts stay synchronized whether you access them from your iPhone or from your computer. Add or edit contacts or calendar entries right on your device or on your Google account on the web.
Important! Google Sync uses the Microsoft© Exchange ActiveSync© protocol. When setting up a new Exchange ActiveSync account on your iPhone, all existing Contacts and Calendar events will be removed from your phone. Please make sure to back up any important data before you set up Google Sync.
This service is free from Google; carrier charges may apply.
