Betaworks

betaworks makes seed-stage investments in the ecosystem of the real-time social web.

To us, seed investing means "first money in." Our typical investment size is $100,000-200,000. We sometimes invest as part of a syndicate of angels and early stage VCs.

Our requirements from an investment perspective are simple, though narrow. Investments must be early stage, heavily tech focused, and have a working (public or private) prototype. We are a powerpoint-free zone.

Source: 

http://betaworks.com/investments.php

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