It depends wholly on how you want a smart contract to work for your business.  Can you give an example?  Generally, although labelled 'smart contracts', they would not ideally be a contract upon which you would rely if you were to issue court proceedings for breach (for example, terms and conditions).  Any smart contract is agreed, binding and entered into before placing on the blockchain so if you were to be placing your agreed contracts online, the only real benefit would be that the contract is recorded and placed there so it is always available and cannot be lost.