has set up the 2015 Supernatural J2 Big Bang Collection on A03. Hopefully, the instructions on how to add your story to the collection are clear. When we posted about the collection in 2011, we had some suggestions about how to post to the A03 along with a reminder to artists that they can post their artwork to A03 - either part of the Big Bang story or on their own.
Here is the master collection covering 2007-2014 (the Ao3 collection was started in 2011 and writers and artists have been slowly adding their past fanworks): http://archiveofourown.org/collections/S
And here is the one set up for 2015.
Note: A reminder that Big Bang fanworks can be added to the collection. Art and fanvids are especially welcomed and can be added as their own stand alone entries or as part of the Big Bang story post. And here is a shout out to the latest Big Bang art posted to the collection: digitalwave's art for 'And Light Remaining After Thunder' by firesign10 (2015) and the most recent Big Bang vid for the 2010 Big Bang: meivocis' vid for "Luminous" by devilsduplicity (2014)
Feel free to cross-post or link to this post. Because this is not being run by the Big Bang challenge moderators, there will be no "official" announcement on the SPN J2 Big Bang community or any of the other SPN communities - so the only way to get the word out to fans who are posting their fanworks on AO3 is through you.
PS. For those on tumblr, here is the official SPN J2 Big Bang Feed