Are bribe payments in Tanzania "grease" or "grit"?

This article uses empirical evidence from Tanzania to show that bribes ther e are not "greasing" but instead encumber economic transactions. The eviden ce suggests that bribe payments promote contacts with service providers, re sult in lower satisfaction with public service delivery, and result in less efficient public services. Further evidence against bribes as 'facilitator s' is presented in the form of opinion polls and actions taken to reduce br ibe payments.