Most forums i have used have an alert system which tells you when someone has replied to you. This could really boost engagement on here because often people don't even know if someone replied so they can't comment back.
Go into your profile, check profile info, check alerts, check alert settings. You can then configure which alerts you want to receive.
You can also subscribe to individual threads using the notify tab, top right. Same goes for each board.
And checking recent unread topics is a handy feature.