There are no foolproof methods to obtain permission, but there are steps likely to yield results.
1.This sentence means that the are no trustworthiness methods to obtain permission, but there are steps likely to fetch results
2.permission-
1) The act of permitting.
2)Consent, especially formal consent; authorization.
3.www.utsystem.edu/ogc/intellectualproperty/permissn.htm
Permission marketing turns strangers into friends and friends into loyal customers
1.This sentence means that Permission marketing change turns strangers into friends and friends into loyal customers.
2.
http://www.fastcompany.com/online/14/permission.html