[genbit]

Idea is to prebuild lists of domains that will likely to be sold - for this you can create categories, like industry or product hunt topics, and for each topic have list of words and synonyms and then use it to offer domains. User can click on topic, ex Photography, and see list of suggestions. If I want to build startup in photography, I have hard time to come up with words from which I can create domains.

Also, one more suggestion, try to market it in non-tech related websites and for not tech people - they might not know how to buy domains cheaper or have preference for registrator.