Ask HN: Should I open-source my code?

I have developed this service in my free time: www.exmerg.com I was hoping for it to become a product with a functioning business model, but i was struggling to come up with one. Right now i am about to quit freelancing and accept a job at global corporation. Would there be anyone interested in the code if I open-sourced it? (It's Java and Javascript, plus ExtJS framework).