I keep forgetting to boost the art exchange group that has stuck around the most diligently for the better part of a decade; #EquineXchange equine-xchange.deviantart.com/
I believe you have until the 5th of this particular month to get in before sign-ups close for the month and emails and notes are sent.
Here is the welcome you get on the group page here on dA as it appears there;
"The Equine Exchange on deviantART is a group for the members, participants and contributors to the EquineXchange Community on Livejournal. Members enter monthly secret-santa style art trades with the aim of sharing ideas, creations and friendships."
"Joining this group
To join the group, simply click the join button! Let me know your LJ Username as you join. Membership is open to anyone, but is intended for those who are a member of the community on LJ"
"How to join a round
Exchange rounds are hosted on Livejournal, a free blogging website which includes communities. EquineXchange is such a community.
Create a free livejournal account at livejournal.com, then at the Community homepage, click 'join community' at the top of the page. Sign-ups are posted a week before the end of the month and are open to all who don't have art outstanding. Emails are sent to the signees on the 1st or 2nd of the month. You can then post your art as a journal entry to the community, before the end of the month."
"How to upload your art!
Submissions should only be those contributed to the EquineXchange through participation or adoptions.
Submissions to all galleries but Featured are open to all members, so you can easily add previous submissions to the appropriate folders (i.e. 2009, 2008 and older etc). Submissions in the Featured folder are restricted, and I will allow one or two per member. Submit your best work here!"
"If you have any questions, message *jet3270 or email email@example.com and we'll get back to you in no time!"
We are more than happy to affiliate with any equine or exchange based group! Just send us a request!"