Bookkeeper, Accountant and CPA Insurance: Need Quote for Article

Need tips that can be used for quotes in article on Bookkeeper, Accountant and CPA Insurance (small business owners): 1) What insurance coverage types do most bookkeepers, accountants and CPAs need? 2) Why do they need this coverage (i.e. risk exposures needing protection)? 3) What advice would you give a bookkeeper, accountant, CPA (or small business accounting firm) looking for insurance?