Since it's such a powerful action, it would be nice if flaggers had to at least justify the flag. Is it breaking a site rule? Is it spam? Is it not the original source? Does it actually violate the rules, or are you just using "Flag" as a mega-downvote for articles you don't personally like?

Yeah, that's the 'receipts for everything' idea and if you think it through, you'll realize it's at a minimum impractical and more likely just an outright bad idea. Where are these 'reasons' going to go? Who is going to read them or act on them? It sort of wants to stick it to those bad flaggers and misinformed downvoters or whatever but think about it applied to you. Do you not recoil at being asked by some random web app to justify your actions? Like, we're ostensibly here for conversation not to fill out TPS report cover sheets.

This is 'drink verification can' but for messageboards.

Frankly, I'd also love to see this for downvotes.