Who Do you Want To Promote Your Community?
A tweet from a top celebrity isn’t going to create a sudden surge in people joining your community.
However, a single e-mail from a respected figure to his established list can have a huge, sudden, impact.
Yes, some new influencers have both. But, given the choice, I’d look for people that have a big mailing list to promote a community rather than a big following on a social media platform.