A battle of the bands is coming to the iPhone. No sign of Guitar Hero yet, but Electronic Arts showed off Rock Band for the iPhone and iPod touch this week at the CTIA show in San Diego.

That will put it in competition with the hugely successful Tap Tap Revenge from Tapulous, a similar rhythm game that has brought out special editions for musicians such as Coldplay, Lady Gaga and Nine Inch Nails. Read more

Robo.to, the  service we highlighted as competing to be your cell phone’s “social address book”, has also launched a Web “TV” version today.

Robo.to lets users record four-second video status updates and these are now being streamed in channel-like themes, several of them started by Justin Timberlake, its pop-star lead investor. Read more

The Guitar Hero of the iPhone appears to be Tapulous’s Tap Tap Revenge.

The rhythm game has been downloaded by 32 per cent of users of Apple’s App Store for the iPhone and iPod touch, according to the comScore research firm.  Read more