Ning quickly disabled iLike and re-enabled a patched version six hours later.

FORBES: Google's OpenSocial Could Invite Trouble

The biggest developers of Facebook widgets, such as Slide, iLike and RockYou, have already said that they will do so.

ECONOMIST: Social networking

Three days later, the same hacker exposed a vulnerability in an application called iLike that allows users to list favorite music tracks on the social network Ning.

FORBES: Magazine Article

But his friends list appeared to be growing at an alarming rate, he was busy asking questions, playing rock, paper, scissors, and describing his favourite artists using the "ilike" application.

BBC: NEWS | Technology | Are my online friends for real?

Last year, as a first step, the company began linking to partner websites like iLike and Pandora through its search engine, allowing people to stream songs with one click from its search page.

WSJ: Google Plans Music Service Tied to Search Engine