I've seen a lot about Skype for tablets (which I have got). It doesn't work (when you launch it momentarily shows the splash screen, and then dies). I contacted Skye support and they were quite clear that they have no software available which would allow Skype to access their system using a domestic wi-fi router. May happen but not specific about when.
Here is the link for a working skype, it works on mine. its a cracked version from a galaxy tab
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