App Store ratings are a valuable commodity, with each additional star worth a substantial amount in sales. No surprise, then, that less scrupulous developers like to try to game the system, but because of the way Apple links reviews to individual iTunes accounts, there’s not a lot of ways to really cheat the system easily… especially if the app is a paid app.

One way app devs can sometimes game the system, though, is by distributing promo codes, allowing their employees to download the app and rate it. No longer though: Apple has just eliminate the ability for anyone to review an app if they downloaded it through a promotional code.

It’s actually a bit ironic. Ostensibly, promotional codes are to encourage jokers like me to review apps. I can understand Apple’s reasoning here, but it does seem a bit rich that app reviewers issued promotional codes can review an app on their own websites, but not on iTunes.

Credit: David Sedlmayer, used under a Creative Commons license.

Today is the day that will bring us one step closer to the death of the cloud. That crucial new part of the internet that is gaining popularity due to the likes of Hulu, Netflix, MobileMe, DropBox, Crashplan, etc. is about to get another blow — AT&T on Monday started restricting the amount of data its millions of broadband customers are able to use in a month. Data is now restricted to as little as 150GB a month.

That isn’t good news — users should an uproar over the whole thing. It means that a large number of people using broadband in the U.S. will be severely limited in what they can do online. They might risk extra charges or even total loss of their broadband access. This comes as Apple is rumored to be on the verge of introducing a more Cloud-based model of computing for millions of customers.

A Colorado builder is incorporating iPads into new homes.

Apple’s magical device is used regulate all the electronic systems in the house — from lights, motorized blinds, entertainment systems (music, TV etc.) to baby monitors and closed-circuit cameras. The docks are built in but the iPads can be removed.

We all know iOS 5 will inevitably be revealed at June’s WWDC, but the internal testing of iOS 5 is already in full sway, according to 9to5Mac… with the most conspicuous device absent being the iPhone 3GS (although not the iPod Touch 3G).

Even if iOS 5 does debut at WWDC, it’s likely to not be out for another few weeks, giving developers time to update their apps. What are the features you’d most like to see in iOS 5? Let us know in the comments.

Amid the poor revues and analyst concerns, Research in Motion’s PlayBook tablet has at least one vocal supporter, electronics retail giant Best Buy. Without offering any hard numbers, the retail chain announced its sales of the tablet “far exceeded” its expectations.

“We’re finding that customers are even more interested in purchasing once they’ve tested the PlayBook in the store,” BestBuy said in a statement. The positive statement from an important big-box retailer comes as RIM tries to rally the troops at its annual BlackBerry World Conference this week.

At the top of our list of must-haves this week is Gameloft’s brand new World of Warcraft-like MMORPG called Order & Chaos Online. Set in a vast fantasy world with thousands of other players from around the world, this is the most promising real-time RPG to hit the App Store yet.

Also to feature is the third release of Zenonia – another RPG which promises to provide “greater enjoyment that the previous two Zenonia’s combined.” The Midgard Story has been revamped and upscaled for a truly epic gameplay experience.

Gears is a physics-based 3D ball roller that defines its genre with an immersive adventure across beautifully detailed worlds that feature dozens of unique and challenging levels.

Find out more about the games above and check out the rest of this week’s must-haves – including Unpleasant Horse and Snuggle Truck – after the break!

Hints of Apple’s upcoming cloud-based storage service – now dubbed iCloud following the company’s takeover of the iCloud.com domain – have been found within the third release of the Mac OS X Lion developer preview under the ‘Castle’ codename.

First discovered by Consomac.fr is a ‘Find My Mac’ feature thought to offer the same functionality as the ‘Find My iPhone’ feature built into MobileMe. What’s more interesting, however, are the strings that indicate users can upgrade from MobileMe to a service called ‘Castle.’

‘Castle’ is believed to be the codename for iCloud – the cloud-based storage service that Apple is currently developing. The service is expected to offer users a way of storing their music and other content in a digital locker, which they can then stream to internet connected devices such as the iPhone and iPad, and save storage space which would usually be taken up by storing content locally.

The service got its ‘iCloud’ name after Apple purchased the domain from a Swedish company called Xcerion, who offer a similar storage service. Xcerion received $4.5 million to rebrand the service and give up the iCloud.com domain.

Citing sources “familiar with the matter,” a new report suggests Apple will launch its new lineup of iMacs tomorrow, May 3rd, featuring Intel’s newest family of Sandy Bridge processors, and the company’s high-speed Thunderbolt port in place of the current Mini DisplayPort.

Apple has recently been taking steps to ensure a smooth roll-out of the new iMacs, according to the same sources, who apparently continue to provide accurate information when it comes to Apple’s plans, says the AppleInsider report. One confirmed that a “visual night” is scheduled for the early morning hours of May 3rd, “so it is highly likely that whatever new product that is going to be refreshed or introduced will be done on [that day].”

A “visual night” is when several Apple retail employees are called in to work throughout the evening and into the early hours of the morning to make changes to store layouts, often removing old products to make room for new ones.

Previous reports have already speculated that Apple was getting ready for the imminent launch of updated iMacs, and stock of the current generation all-in-one is slowly diminishing. The last time the iMac family was updated was some 9 months ago.

Credit cards at the ready!

When you buy an external Hard Drive for use with Time Machine, Apple’s backup software, you will most likely need to format it before you can use it, since chances are that it is formatted for a Windows based computer. You could always spend the extra money to get a Mac formatted Hard Drive, but what’s the sense in that? You can format your own external Hard Drive right from Mac OS X. This video will show you how.

WWDC next month is likely to provide our first sneak preview of the fifth major release of the iPhone and iPad operating system: iOS 5. But with so many enhancements and additions over the years since its launch in 2007, what could Apple possibly add next? This week’s iCloud revelations suggest it might be file management.