According to Crunchbase, Edsurge has raised $5.66 million in venture capital since 2012. (The list of investors in Crunchbase do not match the list of investors on Edsurge’s website.) Edsurge’s backers are some of the most active investors in ed-tech startups more generally, raising a lot of questions about the “independence” the company claims in its coverage of the industry.

Edsurge has also received a number of grants. Its Gates Foundation grants, for example, total $5.2 million. The Gates Foundation has also funded several of Edsurge’s investors, including NewSchools Venture Fund and Reach Capital.

(It’s worth noting: Edsurge also takes sponsorship dollars from the industry in order to research and write articles, as well as to appear at its conferences. This project is a work in progress, and I have not yet pulled all the data from the Edsurge website to assess who has sponsored content or conference booths.)

I’ve created a page on this site that list Edsurge’s investors, as part of my larger investigations into the financial, political, and social networks that are shaping education technology: The Edsurge Network.

I’ve been making note this year when Edsurge fails to disclose the ties it might have to investors and to investors’ portfolios it covers. (It happens a lot, but then again, almost every article would need a disclosure.) I’m going to stop writing about that here on this site, but I will continue to tweet about this with the @disclosedtech account.

I’d really like to be able to graph some of the connections among investors, companies, people, products, policies, and PR, and I think that Edsurge has tried to position itself in the center of many of these conversations.