ATC's are Artists Trading Cards, a bit like a business card with your name & address on it, but much more fun on the back - they can be any artwork or stitchery that you fancy that fits the 2 1/2" x 3 1/2" size (crumb quilts work well
) they help you to track one another down after the event, but don't take up much space (or weight) to lug about a show when you could be carrying shopping
The red dots = the colour of the dots before the name of the thread if there are unread posts on that thread since you last looked - well it is on my 'puter.