Traffic for Skype and other apps on Android I've recently bought an HTC Desire and I'm wondering how much traffic some apps generate. I actually want to know two things: how much traffic (estimation, of course) is generated when syncing with gmail/facebook/weather, and how much traffic is generated when I'm online on Skype and when I talk over Skype.

Edit: to clarify, I'm thinking if I should leave some syncing and if I should talk over Skype over 3G, since I have only 1GB per month of traffic.
Just download an app from the Market called PhoneUsage. It will track how many minutes, text messages, and data you use. You can even view a break down of which apps use how much traffic, and it only tracks over 3G, not WiFi.