23,899,642 people online right now - or so says their homepage.
To quote
Mr Parkes said Skype is building "mega-supernodes" to fix the problem, but that it could take a few hours before service returns and even longer before some features - such as group video calling - start working again.
Not just supernodes but 'mega-supernodes'. I've no idea what this means

. Too old at 57.