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.