An '-athon' is a Marathon weekend of making cards in a certain media for a designated date in time. For example: A 'Collage-athon" is where participants make lots of Collage cards, then post and trade them with other participants in the thread. There are also 'Digital-athons' (DigAT), 'Draw-athons' (DAT), 'Brush(Paint)-athons' (BAT), as well as 'Stamp-athons' (SAT). These are available to join by anyone.
In order to host an 'athon', the potential host should contact a Moderator with their proposal for an upcoming 'athon' and then post the dates to the Calendar Sticky Note.