Just send a message. If after a minute or so you receive a "Message ... not delivered yet" notice in your Skype chat window, he's really offline. If you don't get that notice, he's only "invisible" and has received your message.
You should try http://www.pitit.ro
Skype
there both chat networks and skype has 100m+ users discord has 1m+ users
Credits on Skype enables the Skype users pay for the services and features that are not for free.
They are invisible.
Spectrometer
United States of America
Skype has more users then Krytos has. Skype has over 98 % of all news organizations live stuff
There are many purposes of the Skype. Skype is a program that allows one to video chat users who are in a different area. Many people also make calls on Skype.
it all depends on the person you out there
That number is from a network called Skype. Skype is a site where you can chat with your family and friends with webcam. People without Skype get confused about these numbers because only Skype users know its a Skype number. I know because I have Skype myself.
You can have a Skype account for free, and talk with other Skype users for free. If you want to use Skype to call regular phone lines, there is a cost for that - but no monthly fee.