Skype added 32 million registered users(1) in the quarter, ending the period with more than 370 million registered users around the world.
(1) Cumulative number of unique user accounts, which includes users who may have registered via non-Skype based websites. Users may register more than once, and as a result, may have more than one account.
When will eBay publish the Skype active users? They do it at least for their eBay customers (literally taken from their SEC filings):
Key Operating Metrics and Financial Performance
Members of our senior management team regularly review key operating metrics such as active users, listings, Gross Merchandise Volume (“GMV”), net Total Payment Volume (“TPV”), transaction loss rates, Skype registered users and SkypeOut minutes
