Note: This puzzle is fairly easy. While I can't stop more seasoned or high-rep users from answering, I would appreciate it if it were left to newer members of the Puzzling community. Thank you!
Note 2: Despite appearances, there are not any tags missing from this puzzle.
Now, cleaning the table again isn't a huge inconvenience for me, but the paper does raise some questions. Three questions, in fact, and I want an answer and an explanation for all of them!
- What sort of puzzle is on the paper?
- What is the message that that puzzle is trying to convey?
- What did noticing the paper force me to do?