The Skype hits just keep coming: The VoIP darling on Tuesday launched Skype 4.0 for Windows, with the chief improvement being full-screen video calling.Skype already offers free video calls (and voice, and SMS, and IM) to other Skype users, but now, face-to-face video calling is full-screen and makes use of a new built-in bandwidth optimization manager.The new version also improves ... (111 words)

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