I and most likely many people when applying to groups or contacting people always have the problem of either not knowing when the GM or Player is on or if the GM or player has been active in the last few days. It gets hard waiting for a reply not knowing if this person is an active roll20 browser or only looks at stuff the day of or never checks anything. I think it would be great if roll20 had some kind of system that shows whether the user profile you are looking at is currently active or if they were active with a time stamp of how long ago. I think it would make communication a lot easier with people being able to know when others are online or not.