Clickable: http://www.stumpedia.com
You say it's already making money, so kudos to you. You say you've tried finding a technical co-founder but without success.
If it's making money, can you not see a way to have it make more money? Is there some value in becoming a better developer than you currently are, and then improving the site to generate more money?
I guess the answer to your question depends more on what you want to do.