Yep. It's strange. I have no idea since when this is happening, but Google is promoting the use of Skype when you download the Google Pack (A free collection of essential software).
Bearing in mind that Google has its own voice communication product (Google Talk) it seems like an odd strategy to promote your main competitor's product. But they have hinted this behaviour. Check out a post from the Google Talk Official Blog that is called Talking with Skype
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