I didnt want to post this in the paperclip discussion but since its being talked about i wanted to post about a situation i also notice with currency trades.
I look through currency trades often and tend to hit walls of people looking for gb for sb. I have no issue with people wanting to buy gb from others but it’s usually walls of people wanting to buy gb for very cheap. No one is going to give you gb for 100-500 sb so theirs no sense in listing 10 trades for it.

I think there should be a limit of how many currency only listings you can have to prevent these walls or make it so when wanting gb the lowest sb your allowed to offer per gb is 900. (The lowest ive seen gb go)