Apple has entered social networking arena with the announcement of its new music-based service, Ping, in San Francisco.
The announcement came just hours after Sony announced a challenge to Apple's digital media dominance with a new music and video subscription service.
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Steve Jobs, Apple chief executive, described Ping as "Facebook and Twitter meet iTunes," according to US reports.
Ping will automatically be available to the more than 160m registered users of iTunes when they update to the latest version of the software.
Analysts said the music-centric Ping is unlikely to compete with Twitter and Facebook, but may challenge MySpace, which switched to a music focus after being overtaken by Facebook.
Alongside Ping, Jobs announced a new line of iPods and a new version of Apple TV, which analysts said represents Apple's most serious bid yet for the internet-connected television market.
In an attempt to turn around Apple TV's limited success since its launch in 2007, Jobs announced Apple has cut the price and size of the product by half and increased the available content.
The new version enables uses to stream movies from Netflix, home movies from their computers or rentals from the iTunes online store, as well watch content on Apple's iPad using a wireless link.
Innovations to the iPod range include front and rear-facing cameras to enable video calling using Apple's FaceTime and the vivid screen developed for the iPhone 4 for the iPod Touch, a touchscreen version of the middle-range iPod Nano, and the smallest iPod shuffle to date.
Apple's new iPods will be available next week, but fans will have to wait another three weeks for the second-generation Apple TV boxes.