I'm confused: How are you solving problems for a profession when you know nobody who does it? And if you're solving problems for people you do know, why is there difficulty getting the word out?
Also, for what its worth: tech isn't the only industry with magazines, listservs, and conventions.
It could be a service that benefits many industries, so you don't necessarily have just those bakers in mind. For example Campaign Monitor could be useful for many industries to improve customer retention. The POS system the bakery uses would be another example.
Also, for what its worth: tech isn't the only industry with magazines, listservs, and conventions.