The chat systems we used to use had a timeline fuction. Using an open memo, you could access it at any point in your timeline. Meaning assholes could see it from the past, future or current. Meaning it was one giant clusterfuck and a pain in the ass when trying to organize shit when people don't know the meaning of do not fucking respond to the memo until you're at the point in your timeline when it's put up.

I was an asshole and future me would always jump in the memo to tell past me what a fucking idiot I was being and how ashamed I was I wrote that shit in the first place. It never ended well and was pretty fucking embarrassing in hindsight.