[jitsi-users] Implications of using different networks?

Hi, I was going to try out jitsi as I am less than enthused about skype for potential privacy reasons but wanted to ask about the implications of using different Jitsi via different accounts. If i understand correctly, it doesn't matter even if I used a google or facebook account as all of the jitsi traffic is encrypted correct? Even if that is the case I also wanted to check and see if who you are connecting to is kept private or is this kind of like the PGP/email thing where the contents are private but where it is going/coming is still out there? If this info is still out there, are there services who are more known for privacy (duckduckgo? if i understand correctly) Sorry for the noob questions but I wasn't able to figure it out from reading.