- You can't read them without announcing that you did.
- FB parses and might even censor you message if it contains blacklisted domains.
(The obnoxious thing is that both of our phones are Verizon iPhones; there's no simultaneous voice and data, and unlike me, she tends to do long voice calls with people. I'm trying to get her to switch to a SIP client, so we can do G.722 wideband and crypto/vpn on the voice too, and non-extortionate international long distance.)
I don't know about the site itself, I really only interact via my phone.