Building, Managing & Leveraging an Amazing Facebook Group – Meet ABBO Eric GreenspanJanuary 13, 2016 Accountants, Bookkeepers and Business Owners, a very popular Facebook Group, also known as ABBO. Learn why we created it and how it can benefit your biz.This content is for members only. Members, please login. Not a member? Start a free trial right now and get immediate access to this content.