The digital media landscape is a rapidly, ever-changing place, where new platforms rise and fall and the public’s usage can shift overnight. Considering just how quickly the different media channels can change, we decided to do a brief catch up on what’s going on right now.

Big news in the mobile world has come out in the last couple of days in an AdMob report, which confirms Apple’s iPhone is now the most used smartphone device in the world. Exactly half of all smartphone traffic on the Internet is now coming from iPhones. This represents a 10% gain of absolute share since August. The iPhone’s competitors; BlackBerry, Symbian, and Windows Mobile, have all remained unchanged in the same period.

Ireland’s two most popular Social Media platforms have also seen dramatic changes in the last couple of months. Facebook continues to show impressive growth and now has over 1.1m Irish users at 1,128,220 people. Unfortunately things don’t seem to be on the up and up for Bebo, with their parent company, AOL, slashing jobs and cutting costs all round (including making the Irish Country Sales Manager redundant). So while Bebo still has big numbers, their relevance to an over 20 (or indeed an over 18) demographic is less than it was a mere 6 months ago.

In the world of search Econsultancy has released data estimating that the total UK Search Engine market will be worth in excess of £3bn for 2009. Within this, the paid search marketplace will grow by 12% to a value of £2.71bn, while the organic search market will grow by 14% to £376M. At the same time, however, an Econsultancy UK Search Engine Marketing Report shows findings that only 5% of companies are paying to advertise on mobile search listings. This figures shows no increase on last year.