[oinksoft]

I think because it's a relatively easy idea to come up with, and the implementation details aren't earth-shattering. A year ago I was fixed on making a similar business called MeteorBill and worked part-time on it for a couple months before scrapping it .. I'm happy I did now, as my market research was clearly incomplete, and my UI was startlingly similar to yours and OP's. No great loss, I learned Erlang/OTP and Mnesia via that project.

[xplorer]

I am interested in understanding why you decided not to continue with your business ? It looks like OP's company is doing pretty well. Customers would not be an issue for you. If you look at the number of employees OP has it is a possible market to persue. Competition exists everywhere.

[oinksoft]

I also wasn't so enamored anymore with the idea of spending lots of time on software to help people bill each other. Silly of course, as it's a real need, but I realized it just wasn't where my head was. Could I have made the business work? Maybe, but it would've felt like nothing but work.