Twitter's app for Windows Phone 7 devices uses Microsoft's Metro user interface, which uses so-called pivots to browse through information, making the app look unique in comparison to counterparts on Android or iOS (the iPad app is an improved replica of the new Twitter website).
Because of the shortcoming of the first release of Windows Phone 7 software, the Twitter app won't be able to run in the background or integrate with your contact list initially. By contrast, Microsoft built Facebook functionality into Windows Phone 7 contacts, so you can see your friends' updates straight away from the People hub, and also integrated your friends list with your contacts (a blessing in disguise for some, as it could clutter your contacts with hundreds of Facebook friends).
In case you are still on the fence about Windows Phone 7, reviews are mixed, with some saying that Microsoft's effort is too little, too late, but given the company's power, the new OS stands a chance in the market. The first Windows Phone 7 devices are in line with current smartphone specs (see comparison chart), and you will be able to pick one from your favorite wireless carrier.
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