Is there VOIP with coop? Why they didnt include chat is beyond me.
Yeah, ThunderLicker and I used it when we were playing through. Seeing as Battlelog is separate from the game I don't think it matters what mode you're playing, as long as you're all in the party you can chat freely.
What I understand even less is why there are 8 slots in a party, so 8 people can chat. 2 people for Co-op, 4 in a squad, 8 so that....two full squads in a game can all chat together? Why two squads?