I added FLI as a related entry. This is because Anthony Aguirre co-founded both orgs. But the orgs have fairly distinct missions and activities, and I don't think there's any other connection apart from through Aguirre, so maybe that isn't worth mentioning the Related entries.
Yeah, I think the connection is not strong enough to justify inclusion, so I removed it. I don't have strong views on this, though, so feel free to revert my edit if you (Michael or anyone else) think it's definitely worth including.