There isn't a function for that and no way for me to edit, only close topics. That's one thing I've had a hard time with, and unfortunately I have had to close duplicate threads for treasuries in hopes that people will understand. I have thought about closing all but one thread for the different social networks, but so far haven't. I hate doing it because I don't want to offend anyone, but our threads could become like the ones on Etsy: pages and pages and so hard to find the one you want! I will say it here once more:
PLEASE LOOK FOR YOUR TOPIC ON AN EXISTING THREAD BEFORE STARTING A NEW ONE! THERE ARE THREADS ABOUT MANY SUBJECTS ALREADY STARTED!
Thanks, Everyone!