Have you ever applied your domain expertise to other domains?
I'll give you a rare example;
A coder took his AI Hamming pattern recognition code, and, applied it to an exploit for Repos!
This is cross pollination in action. For, we all believe in unity of knowledge - and - how one domain experience relates to an others domain expertise.
This is how cross pollinating your work works!
Take food manufacturing processes, they involve marketing, and as marketing experts, create a niche market specific post on marketing for the food business! Then apply your knowledge to every domain! Cross pollinate! Soon, your niche market of sites will have relevant data to process on which domains fit the gap.
In conclusion, if it works, try it!