Who Owns What? Muckety Maps of Power Relationships

Interactive, searchable and embeddable, Muckety maps explore the relationships between companies and people who work for them.
Browsable by name, organization, or category (i.e. media, politics, etc.), Muckety Maps are a good way for figuring out the people behind big companies and news organizations. Excellent for those interested in media conglomerates and media monopoly.
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Do you know any similar tools, or can you make some interesting map searches on Muckety? If you can, please submit them in the comments section.

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