It seems like the obvious solution is a crawl on demand service provided by Google-so that when you publish new content, or your content is updated you can get

It seems like the obvious solution is a crawl on demand service provided by Google-so that when you publish new content, or your content is updated you can get Google to index your new content, and associate it as original content based on first appearance. Then, it would be up to Google to prioritize content originators over farmers.