AJK  Are you referring to the ability of Skype to send your SkypeIn number as your Caller ID? If so then Caller ID isn't blocked and is gradually becoming available but it depends on the countries involved. It's working fine for me in the UK and I think it's reasonable that I had to activate it via my account page first.

As for SMS caller ID well that's also working fine for me once activated via Skype Preferences. It took a while after activation for me but it is working now, although it might not always work depending on the network your sending to.

Skype Support I can't comment on because after years of using Skype I've never had to use it.  
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