Technically It says here in the website of There ToS : https://gyazo.com/0484bd7bba7bf0aa77989fa9421fe046
http://wiki.secondlife.com/wiki/Linden_Lab_Official:Residents'_privacy_rights
3rd Paragraph Of Remote Monitoring at the end of there partial paragraph "If you feel recording a conversation is necessary, post a clearly-visible sign in the recording location so that all Residents who enter can see it."