Twitter has announced it will link its service with Apple's Ping. More than 175 million registered Twitter users can now connect their accounts to iTunes. The linking occurs from within Ping: iTunes users today are being greeted with a new banner telling them to add their Twitter accounts. "iTunes song previews are available on in the 23 countries where the iTunes Store offers music," the company said in a statement.

Once the accounts are linked, whenever you Post, Like, Review, or tell your friends why you purchased a song or album on Ping, your Twitter will be notified. Song previews and links to buy music from the iTunes store are included in the messages. Clicking on a link shared through Ping from Twitter's website shows song details and the song preview right there on the site. The integration is also meant to help Ping users more easily find their Twitter friends on the service.

Twitter's deal comes after Apple failed to strike a Ping partnership with Facebook, which has more than 500 million users. Apple launched the Ping social network two months ago. It works within iTunes to let users follow artists and recommend songs to their chosen circle of friends. The company originally held talks with Facebook, but the discussions did not result in an agreement.