Ideally the icon shows a realtime value or reasonably up-to-date value of Ratio of Fact:Fiction, Ratio of Reporting:Opinion. If you saw a piece of news from YC

Ideally the icon shows a realtime value or reasonably up-to-date value of Ratio of Fact:Fiction, Ratio of Reporting:Opinion. If you saw a piece of news from YCorp and their Fact-to-Fiction ratio was 9:1 you may say, "okay, that sounds likely." If their Fact-to-fiction is 1:18 However, you might just remember to laugh instead of resharing potentially hazardous messages. To me "icon" can also mean values/numbers/measure and not just "this is healthy and green, this is toxic and glowing"