Mobile publishers, iPhone or Android app developers. Be careful when placing ads on your sites, apps!

A rough advert slipped in to Admob's publisher network costed money to quite few people who use iPhone application called Talking Tom Cat.

Application designed for kids was using Admob adverts to support free version and some adverts was designed to trick users/children to click and dial premium rate numbers.

Admob said: "Click-to-call ads with premium numbers are classified as age-appropriate and normally would not appear in apps for children. We will work with the app developer to block these ads if we discover they are showing."

From TheRegister;