The Last Word Chain thread (as well as the more compressed Three Word Story often turn into short-term DiD exchange (they're both on the Fun & Games board). Just check out the latest pages in the Last Word thread with yours truly acting bondage sub or abducted girl in danger and you'll see what I mean. Those threads are open to use on the spur, or just toss in a post with an implied situation and see if somebody won't walk in and return the favour.