Yes, there are several ways to earn extra cash when playing this game. For example, you can sell your jokes to others who want to buy them. Or, you can offer to help someone write their joke. This will allow you to earn extra money and provide new content.
You can also take advantage of affiliate programs. These programs pay you a commission whenever someone buys a product after clicking on your invite link. There are plenty of affiliate programs that you can sign up for. These include Amazon Associates, ShareASale, CJ Affiliate, Commission Junction, LinkShare, and Media.