after passing the newbie muster is the marketplace where one might post links to .onion sites? i saw something saying that it was limited to profile signatures. is this correct? are there any wikis or other types of directories that list sites accepting bit coins? if so, what is the accepted procedure to get sites listed on these indexes (if they exist at all)?
I'm unclear on what you're asking exactly, but the marketplace here is to list goods for sale, not really advertising other sites.
There are sites that index TOR sites / marketplaces, but I'd just search for them.