I work for a software company in MI and we currently only make one product for the mac. We are considering expanding in this area in the hopes that we will increase the sales to windows users as well, just from more word of mouth. Is this a reasonable goal? Any thoughts would be greatly appreciated. I may even be able to give free licenses of our current mac software to those of you that provide thorough feedback. Thanks a lot!

What's there to lose? Go for it. If it doesn't work, then you know what not to do. I'd say writing software that has support of multiple platforms would increase your sales. I'm curious, what type of software is it?