How can we get more people using the website?

Because I run this site for FREE, it really isn't possible to spend a ton of money on advertising. I've been spending a little each month but the returns have been minimal.

I also try to post my puzzles on Facebook with a link to the puzzle on this site each time I complete one. Maybe if others did that too it would help.

Do you have any other ideas that might help get things going? Please contact me and let me know your thoughts.