It’s been revealed that the German ministry for home affairs (and thus the German police) are monitoring Skype, Google Mail, MSN Hotmail, Yahoo Mail and Facebook chat if deemed necessary.
Skype used to be secure, encrypting data before being sent across a P2P network. Now we see that some authorities have a way to eavesdrop.
So just keep in mind that if you value privacy you shouldn’t be using the networks shown above. It’s also a good time to remind you that SMSs are often recorded for the same reasons.
More details here.