I got stuck on level 10! But I love the game.

17? I thought there were only 10 levels. I made it through 8 and am completely jammed on level 9. I can't figure out how to get that one!

Quote Investigator - dedicated to tracing quotations. A really neat site. http://quoteinvestigator.com/

Google Ngram Viewer. This is very interesting. It charts frequencies of any word or short sentence found in the sources printed since 1800 up to 2012. You can see when certain words became popular. Try it! https://books.google.com/ngrams