???Google does it for me.
I like Android in that sense. My gmail account gets more awesome every year. Pic hosting. Document viewing. Calendar syncs with phone. Contacts. I love it.
When I sync to get my mail, my phone uploads my new contacts?
Nope, none of my contacts got uploaded to gmail.
In your settings you have to click on contacts if you want it to sync contacts.
It's great to be able to sync contacts and calendar anywhere I am and not have to wait to be home or at work to hook-up my phone to a computer.