I just discovered yet another neat feature on Yahoo. You can sync your cell phone address book to Yahoo AND sync Yahoo Calendar to your cell. This is really powerful.
I use Yahoo Calendar as my primary calendar as it can send reminders of appointments at times I specify to email or my cell, an incredibly useful feature.
Now I can sync everything. It took about 3 minutes to do the first sync, and now my address book and calendar are a) synced and b) backed up.
More than Google, more Microsoft, more than anyone else, Yahoo really gets wireless.
(Note:””This service is only available to Cingular and T-Mobile subscribers with SyncML compatible mobile phones.”)