You have to evaluate the popularity of the dot org you are trying to capitalize on. It has an Alexa rank of of about 4.5 million, so maybe it get 3-5 thousand unique per month tops. You are not gonna get much mistaken traffic from a site like that. I'd be surprised if you get more than 20-30 per month, but I could be wrong.
If you can monetize it and make some money, than you will have made the right choice. I think the response you got was just lukewarm, cause it's just not a huge deal based on the name/numbers.
You want to target sites at least 1 million on Alexa or better for this kind of thing to have better odds and return on investment.