I know Charlie Shrem and Tony Tran better than Sally and Steven. Think that tCharlie and Tony are the most important for the BIG RELATIONS development for the time being. Hope you get more people like them. Interesting that you get advisors that actually contribute to the project from different areas: Charlie and Tony (mostly for relations, connections, certain future vision), Steven for finance and legal, Sally for distruptive technologies.
I also saw Sally on TEDx talks. Here is a link to youtube video
RE: Introducing EFFECT.AI’s Board of Advisors