Little blue folder with little blue flame

[Razorblade]

Okay, so what does this icon mean?

on the legends it says for threads that have over 15 replies, but there's tons of threads out there with fewer than 15 replies and they stil have that icon to their left.
What's going on?

 

[Jonathan]

that it means hot topic but you've either read all the posts or no new ones since you last looked.