Skype requires these permissions:
Your personal information
read contact data, read contact data, write contact data
Your location
coarse (network-based) location
Network communication
view Wi-Fi state, full Internet access, view network state
Your accounts
discover known accounts, act as an account authenticator, manage the accounts list, discover known accounts, use the authentication credentials of an account
Storage
modify/delete SD card contents
Phone calls
read phone state and identity
Hardware controls
control vibrator, change your audio settings, record audio
System tools
disable keylock, prevent phone from sleeping, retrieve running applications, read sync settings, write sync settings, modify global system settings, read sync statistics
Extra
android.permission.WRITE_SECURE_SETTINGS