Historical clue formulations

• "Yep, totally feel that" — 2024-03-23
• "Message received" — 2019-08-07
• "Yep, perfectly clear" — 2018-08-04
• Jolly "Roger"? — 2018-05-11
• Words of empathy — 2017-11-26
• "Yep, that's clear" — 2016-01-26
• "Tell me about it!" — 2015-07-02
• "Amen, bro!" — 2011-02-26
• "1-Across to 63-Across" — 2011-01-18
• "Comin' through loud and clear" — 2009-01-03
• "Right on, brother!" — 2007-02-10