I also think it should become a regular "something". I also participate at http://feltingforum.com
and I must say there are more participants.The price is per 3 months.
A tip I would like to give is: make the last entry date by the end of the month. So on the last day. This is easier to remember. The first week of the month can be used to vote and of course start a new challenge.
I saw your notification that a new challenge was about to come, that's why I've seen it. Maybe you can work out some schedule in which we can see what the subject for the month is going to be? In August I had plenty of time to work something "flowery "out, But I didn't knew the subject then, maybee If one knows earlier there are more entries?
I hope these challenges will keep coming! Good for trying something new with felt.
keep up your good work!