As we reported on Thursday, Valve Software recently took the wraps off the Steam mobile app for Android (and iOS), as part of a limited beta. Steam users could register their interest by downloading the app and entering their details, and over the past day or so, the first beta invites have started to roll out.

DoubleTwist has long been a favourite for those who like to sync their music and podcasts between iTunes and Android. Todays update among other things brings an integrated podcast catalogue. The catch, this particular part of the app is a ‘premium feature’ with a premium price.

The folks at Symantec have tipped everyone off about a new piece of Android Malware, calling Android.Counterclank “a bot-like threat that can receive commands to carry out certain actions, as well as steal information from the device.”  They note that starting one of the apps “infected” with the apperhand SDK package will show a second service running, and often places a search icon on the home screen.  They have verified this is in 13 applications on the Android Market and are calling it “the highest distribution of any malware identified so far this year.”  Some reports on the internet claim it may have affected 5 million users.  That’s 5,000,000 — a huge and scary number. And it makes for a great headline.

Delta Air Lines’ Fly Delta Android app has long been one of the first things I install on a phone. It’s well-designed, and has added a couple killer features since its release nearly a year ago — mainly the ability to view upgrade/standby lists and check and change seats from your phone, and more recently they added the ability to track your checked baggage. Good stuff.

I’m not exactly sure how many folks out there use apps from Yahoo but if you’re among those that do, you’ll want to check the list below. Reason being – Yahoo is laying some of their mobile apps to rest to focus on a whole new set of apps that more so meet users needs. So what apps got the cut?