Years ago, integrated chat with voice was not very good, My roll20 groups moved to Skype, but it was slow to connect, and not stable with more than 6 or 6 players. I did not like google hangouts, it just was not a fit for me. I like discord on my phone... If a player has a note for me, I can get it from my phone and do not have to log in to roll 20. Individual volume sliders on discord. it accepts graphics postings in line on text chats. Big fan of Discord. Also, Discord has larger communities where it is easy to meet people that are serious gamers, not going to sign up to play and then bail out before the game, So I get to meet hundreds of people, that is usually very reliable. The Roll20 community consists of people looking for a DM or for players, and bug reports, API stuff, etc. That is about it. I do not have a dialogue with the larger community on roll20.