Jon S von Tetzchner, who co-founded browser company Opera Software and led the company until last year, is leaving on 30th June.

Lars Boilesen, the current CEO of Opera Software, said "We are very proud of Jon, and of course of the company. We are aiming at 500 million users by 2013, and we have a very positive flow right now."

10 million online consumers in the UK made a transaction using a mobile device last year, according to the results of a survey commissioned by customer behaviour analysis business Tealeaf.

Shopping was the most popular m-commerce activity, although financial transactions, travel bookings and insurance payments were also popular. The average consumer completed 4.4 mobile transactions per month.

Facebook is upgrading its mobile website - m.facebook.com - so that it identifies the type of device visiting the site. It means the company will no longer need multiple versions of the site, including touch.facebook.com, and will be able to add extra functionality for compatible devices.

The same improvements will also be available on 0.facebook.com.

Version 6 of the free Opera Mini mobile web browser is now available on the GetJar application store. The news comes less than a month after GetJar removed Opera Mini because it had a link to Opera's own app store.

Opera Mini 6 is available for Android, BlackBerry, J2ME and Symbian platforms.

Multiplatform mobility company Good Technology has enhanced its Good for Enterprise product to include a secure web browser. It means that mobile users can now access intranets and other web-enabled enterprise applications  without worrying about the security of the information they're sending and receiving.

Good for Enterprise already offers secure email access across a range of mobile operating systems, along with 'remote control' of device functionality by IT administrators.