Cue theme from The Twilight Zone....
So, on Tuesday Nov 1, I created a 7-by-many in the Your Puzzles section. I chose the word 'convivial' as the seed word, with the central letter L. You can imagine my surprise when I opened up yesterday's 7-b-m puzzle, to find that it had the same letters and 2 seed words, only with the central letter being O.
Was it just a coincidence, and if so, what were the chances something like this could happen randomly?