Hi dianebry!

Have you read the FAQ's? Here's a link. Hopefully that will help to answer your question.

Here is a link that might be useful: Round Robin FAQ's

Well it IS confusing because any swap that involves more than two people has been lumped together under "Round Robins"
There are at least three types of swaps going on here. The traditional round robin starts witha hostess and a box or large envelope of stuff ( used to be just seeds). The hostess takes sign ups and sets up a flight path for the "robin". At each stop the member takes out seeds and replaces them with an equal number and hopefully equally valued seeds.
A group swap can be a short, one time swap or go on for up to a year. There is usually a theme but it is not necessary. The hostess takes sign ups and matches people up to send to some one else. This is a one person send to one other with a hostess/ facilitator.
The third is another older type of swap where a hostess has everyone send seeds to her along with a wishlist and a Self addressesed stamped envelope.(SASE) She sorts seeds and returns to each person the same number of seed packs that they sent.
Hope this helps clarify a bit. BB