Yet another diversion...SET is online

One of my favorite games is now a puzzle online. As if I don't already waste enough time with puzzles and online miscellany. When I first discovered it this morning, I thought it was faulty because the cards didn't change out. But (read the rules, duh) they switch out every day and you can re-use cards to find 4 (beginner) or 6 (advanced) sets--keep looking.