Have you seen the permissions the Facebook App has on the HTC Rezound? (And I'm sure on other phones.) Oh BTW you cant actually remove the FB App from this phone unless you root it.
This is exactly what it says on my phone...
Permissions: This application can access the following on your phone.
- Your personal information
Read contact data, write contact data
-Services that cost you money
Send SMS Messages
Edit SMS or MMS, read SMS or MMS, receive SMS
full Internet access
act as an account authenticator, manage the accouns list
modify/delete SD card contents
read phone state and identity
prevent phone from sleeping, write sync settings