The Inquirer 
Sept 24, 2010
MOBILE OPERATOR T-Mobile has admitted that it picks and chooses which text messages to deliver on its network.
The admission came in legal case in which the mobile operator is being sued by the short-code text service EZ Text. The text marketing firm, which signed up a California marijuana dispensary found that it fell afoul of T-Mobile’s apparently secret guidelines.
T-Mobile said that it reserved the right to pre-approve EZ Text’s clients, a list of which it says the firm never submitted. In the New York federal court filing, T-Mobile said it requires pre-approval “to protect the carrier and its customers from potentially illegal, fraudulent, or offensive marketing campaigns conducted on its network”.