The iPhone is taking the world by storm. (no pun intended RIM) Yesterday, Apple announced their quarterly earnings for Q4 2008 and the results were shocking to say the least. Apple reported they sold 6.9 million phones last quarter which achieves their goal of 10 million in 2008. Also surprising is that Apple is now the 3rd largest supplier of phones. Here are my thoughts on the matter:

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It is also known that RIM and Google are planning to implement their own version of the iTunes App Store which has proven to be wildly successful. Imitation is the sincerest form of flattery, right? Doesn’t this all sound familiar? Remember when the iPod first started to boom? I digress.

I’ve found the iTunes App Store to be a great addition to the iPhone universe, especially since there are a good amount of high quality free applications. The question I have for everyone is, have you been tracking how much you’ve been spending on the iTunes App Store? I know some people are well aware of how much they spend on songs in the iTunes Store and elsewhere, but do you truly know how much you’ve spent? For me, it’s easy: I’ve spent $5.99.

The only application I’ve bought to date is Tuner by Nullriver, Inc.

I’m quite proud of this since I was tempted so many times to buy other applications, but I refrained. I’ve made it this far by focusing on all the great free applications on the iTunes App Store. Some of these include Evernote, Pandora, Facebook, Twinkle, Remote, AirSharing, Pro Football App, and College Football App. In these days where many are cutting back on costs (myself included), free is a great price.

So, what apps do you feel are must haves for the iPhone/iPod-Touch? Have you tracked your spending in this temptation store? Do you care? Let me know in the comments.

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• From An iPhone To A T-Mobile G1
• My Top 10 iPhone Apps of 2008
• Jailbreaking Now Illegal: Blame The Pirates
• iPhone Developer Agreement Bans Jailbreaking [Updated]
• iPhone Update Means Bad News for Custom Apps