One who devotes their life to either hoarding or selling bitches,usually for their beinift. Bitchmonging is commonly performed for the monger's sexual pleasure (although i don't know why); however, it is known that some crazed individuals do it just because...well...they are crazed.
A bitchmonger can also be a derrogatory term for someone who is being exceedingly bitchy.
"Wow, do you know that hermit that lives in the cave on 53rd street? He is a huge bitchmonger. He's been buying and selling bitches his entire life."
"She is such a bitchmonger! AGH!"