Compare this service, for instance to the cost of just one ad in a trade publication of any size. For obvious reasons, we try to select segments of the programmer population that is likely to be of the most interest to most software vendors. But sometimes you may be targeting a particular niche and not really have much use for Windows programmers, Java programmers, etc. If you can really determine that you're not interested in the groups we focus in on, then ask for a proposal to conduct primary research on the group that you ARE interested in. We will be very happy to present you with a proposal for the research you need, and to work with you to make sure that it is exactly everything you want it to be.
Proposals are free.