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According to a new report from network management and video optimization firm Bytemobile, mobile video now accounts for between 40% to 60% of the total mobile data traffic on operators' networks. Half of the video consumed comes from laptop computers, iPhones, iPads and Android devices, the company found.

But here's an interesting side note to that data: When broken down by device, iPhone users see more video data traffic than those on Android, or even on laptops.

I very rarely review a single mobile app these days - we prefer to do mobile app round-ups here on ReadWriteWeb - but I'm going to make an exception this time for Photogram. This new iPhone application, launched just yesterday, is deserving of a mention, if only for catching my attention among a sea of mobile photo app startups.

From the description, the app seems somewhat basic, maybe even a little boring: share photos via Facebook, Twitter or email. But it does so with a simplicity, elegance and ease that I've often found lacking elsewhere.

App monetization and distribution service provider Tapjoy has just announced the launch of a $5 million fund to help iOS developers port their existing applications to Android. The news comes on the heels of Apple's policy change, which affected all apps that used Tapjoy's pay-per-install advertisements. Apple's decision, said Tapjoy at the time, "is destroying the user experience and threatening the entire freemium model."

Now, the company has a workaround: move to Android.

In a recent interview by RedMonk's Michael Cote with Pete Marshall and Peter Spung of IBM, Coté says that DevOps is moving into the mainstream. Marshall thinks this is party due to companies looking at Google and other organizations that have tightly integrated development and operations teams.

Is this true is DevOps really going mainstream?

Today, Yahoo introduced two new search tools, one a new online search engine for finding new mobile applications, and the other a mobile app called AppSpot (iPhone, Android), which does the same. According to a Yahoo blog post, the goal of these new services is to help you better sort through the some 425,000 mobile applications on the iTunes App Store and the 200,000 apps on Google's Android Market so you can find the app you need.

But will Yahoo's efforts prove better than any of the existing services that already do the same?

Apple is now selling an unlocked version of the iPhone 4 in its online store, confirming earlier rumors which hinted this would be the case. The new iPhone 4 is the GSM model, which means here in the U.S., AT&T or T-Mobile only. The phone works outside the U.S. on any other supported GSM network offering micro-SIM cards for the iPhone 4.

Most importantly, the unlocked iPhone 4 is available contract-free.

From the makers of mobile app discovery service Zwapp, there comes OneMillionAppSchemes.com, a new initiative which aims to open source the unpublished custom URL schemes for iOS applications. For those unaware, a custom URL scheme is a way for apps to communicate with each other and do other smart things. For example, custom URL schemes allow other apps or Web pages to call the app, trigger it and send data to it, or even transfer data between lite and paid app versions.

Apple's built-in apps like Safari, the Phone app, the Messaging app, Email and others have URL schemes included by default. Developers using the iOS SDK can built their own, too. Unfortunately, though, there isn't a well-maintained master list of these custom URLs anywhere on the Web.

Just because Microsoft has its own mobile operating system called Windows Phone 7, that doesn't mean it's above using the popularity of Apple's iPhone to attract new users to its up-and-coming Bing search engine. For example, this week, the company highlighted a recently added Bing feature called "auto app discovery" by way of a company blog post that describes how the Microsoft search engine is a great tool for finding new iPhone applications.

When we talk about the benefits of using a non-relational database management system, often referred to as a NoSQL database, we sometimes lose track of what a traditional database is still good for (for some background on what a relational database is, see our guide to data terminology).

In a blog post at DBMS2, database veteran Curt Monash explains when it's still best to use a relational database.

A new report from Forrester focuses on the topic of building secure applications for the iPhone and iPad. Given iOS's popularity among enterprise and consumers alike, it's important for developers to understand the best practices for ensuring that mobile apps handle sensitive data appropriately. This is especially true when building apps for the financial sector.

But the finance and payments industry aren't the only ones who can benefit from a better understanding of security management - anyone building an app that handles customers' private data should be aware of iOS's data protection features and guidelines.