Yahoo's high-profile new lady boss has decided to quicken the company's move away from BlackBerry, letting its staff upgrade to an iPhone 5, a couple of Android models or even something running Windows Phone 8. Yes, RIM, even a Nokia running Windows Phone 8 is seen as a better choice than a BlackBerry now.

In typical Yahoo style and with plenty of exclamation marks, Yahoo has launched what it calls internally the "Yahoo! Smart Phones, Smart Fun!" scheme, which encourages Yahoo employees in 22 countries to upgrade to a modern smartphone. The iPhone 5 is on offer alongside Samsung's Galaxy S III, HTC's One X and EVO 4G, plus the Nokia Lumia 920 for those who still want to feel like they're supporting the underdog in the tech wars.

Mayer said, using the endearing phrase "off of" in a memo: "As of today, Yahoo is moving off of blackberries as our corporate phones and on to smartphones in 22 countries. A few weeks ago, we said that we would look into smartphone penetration rates globally and take those rates into account when deciding on corporate phones. Ideally, we'd like our employees to have devices similar to our users, so we can think and work as the majority of our users do."

All use of BlackBerry models as Yahoo work phones will end, with the IT teams no longer providing any support for RIM's struggling format. [Telegraph]