[tmnstr85]

GuideStar is the veteran in this space. I agree that doing this based on web scrapes and robots.txt is probably going to be pretty tough to get quality results. GuideStar always sells there product on the premise that they're vetting the financial statements of non-profits of best results. The real money might be on figuring out a way to scale reading and classifying non-profit financials - then see if you can quality control using a set of patterns.

[AlphaWeaver]

This isn't a search engine for nonprofits, it's a search engine that's designed to be run by a nonprofit one day.

[blueatlas]

Or perhaps a for-profit company running this search engine and not garnering profit from it by directly changing search results, or having a different model for profit that does not affect search rankings.