adding mailing list form link

README.md

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 2. **Product Discovery as Cooperative Communication**: mathematical modeling research. See the [project 1-pager](https://docs.google.com/document/d/1qwcdIuacdUHd_bQTCdA8V3_3w6-0Aj_AIIo8oSOnNPI).
 3. **Software for E2C**: an open-source software framework to help companies exit to community. See the [To Community 1-pager](https://docs.google.com/document/d/1qwcdIuacdUHd_bQTCdA8V3_3w6-0Aj_AIIo8oSOnNPI) and our [YC pitch video](https://www.youtube.com/watch?v=Xt5fWkI7Gj4).
 
+Want to stay in touch? Join the [mailing list](https://forms.gle/T2GpoZ92ghxH3tSC7).
+
 ## Open Founder Interviews
 We are looking for collaborators—founders, investors, and researchers—on the founder interview project. By talking to founders and investors, we hope to better understand the incentives and openness to collective financing in early-stage technology startups. For example, how open are founders to setting up a community pool for their users and stakeholders? Under what conditions can founders negotiate capped returns with investors? Under what conditions can investors tell founders to implement some form of democratic decision-making in their startup?