This idea is sort of bad because like MrLlamaLlama said, The shops what (if this idea comes into play) do get pinned what were successful then they would attract even more business. I don't like the idea for several reasons including the one I just typed.
This idea is bad because.....
A - See Above
B - It's unfair
C - It's not that useful
D - It can be bias
E - It will fill up the trading stalls forum with Pinned Topics what In my opinion I don't like seeing (Loads of pinned topics).