Sony revealed that it had plans to add Skype Web Phone function to PSPs in Japan by the end of this month. It appears as if Sony is trying hard to sell its PSPs which are way behind Nintendo’s DS in sales.
Eventhough it was planned to be up and running by January, the delay, as mentioned by Sony was that the microphone which was planned to be sold along with PSPs didnt meet the Skype specifications for the PSP users in Japan.
Skype intervened stating that the microphone would pass the Skype requirements if it is sold with a recommendation to be used within 10 centimeters from the mouth of an user.
More details on ZDNet