i want a new one RIGHT NOW!
seriously though... I think maybe having two subjects in at least two poses each per jam will add to the freshness.
I don't know why people are feeling obligated to post every jam. in my case, i feel my drawings are often so poor, and I haven't posted in half a year, but I still ike to try them on my own, if its only to crumple them up and throw them in the wastebasket. At least I get some practice.
That easily disposable input having been said, two weeks would be a good span of time between them. We should feel free to continue posting on recent jams even if there is a new one, right?