Why do some older messages appear with parentheses around user names?
For a three-month period before our new forums were launched, we encouraged users to go through an account migration process to associate their former User to User forum IDs with their Adobe ID. Accounts with the parentheses are from those users who had content in the old Adobe User to User Forums, but who have not yet signed into the new system. The parentheses were added to these account names so they could be imported into the new system without clashing with screen names associated with Adobe IDs. Once a user logs in with that account in the new system the parentheses will go away.