Replying to:

@matt I don't understand how there could be a downside to this?

Being able to follow people that choose to use the service - good Bring more people to the open web - good

If they want to harvest data from the people that use it that doesn't really matter to the rest of us does it. If people don't like it their admins can just block the whole instance. It becomes a night mare, it gets defederated.

Greg Morris @gr36