The current Postcard exchange was my first ever attempt at sending my work to others. I have been very pleasently surprised by the encouragement and favourable critiques I've had. I would be quite happy to send images to a group of similar size, or up to 50ish. If the group is split then perhaps 'shuffling the pack' would enable each participant to correspond with all the others over say two or three rounds.
By the way I'll be in for the next round - 7 ? what ever the outcome.