There's no set rule for the clues, but on my end, I either do it when a few people have given several answers that are completely off the mark, or when a request or two is done.
The admin formerly known as Dr. Cossack.
I post musings, images and nonsense on Tumblr! I play games on Steam! Add me on either/both, and don't hesitate to ask if you want to play something with me!
"There are only three things certain in life: Death, taxes, and Teej's obsessions." ~ RisingDragon (still true in 2019!)