I have been a site admit on a domain site and started my own forum site for betta's and every time we make a space for a forum called trading post where people can post there animals they would like to trade/barter out for other animal's its a big hit!
I think a dart frog trading post where people who have frogs they have breed or maybe they have one to many females can barter them out for other people frogs to start a new viv. of another species would be a great idea!
the way we did it on my betta site is if you work out a barter on something, you pay each other's shipping then exchange the tracking number's this way you know your package is going to get there on time and if its someone you have dealt with on a long term basis you would already be at ease,
then as a back up could start a branch off of that forum called (the good the bad and the ugly) that way if you have did good business people could post good recommendations about you and it will pull more business your way.
and will be a fail safe device to insure that people do the right thing because noone wants bad press, and the admin has full range to see if its a bogus post or if its true and people need to know who to watch out for.
post your comments let me know what you think?
well anyways (just a idea)
best regards Mike Johnson
nextleveltubs@yahoo.com