Anyone have any tips or leads? Also, how would I get them to not run away with my idea?

I have an idea for a side gig. I don't think it'll make a ton of money. The idea would be for it to almost donation based. But I think I could at the very least break even after a year, and make small profits thereafter.

I still need to do some research into how it would all work, but without giving away my idea, it would be essentially using the website to act as an intermediary between certain individuals and certain businesses, instead of doing the same interaction over the phone, or via fax. Essentially saves everyone a lot of time.

I'm somewhat in the industry I'm looking to cater to, so it would be easy for me to spread the word. There have been similar services, but they went from freemium models (limited free use, with a premium service subscription) to just subscription based that's too expensive for most people that use it only occasionally.

Thanks