We have been asked frequently in the past whether they can detect invisible Skype users on our website, like they can do that with our Yahoo detector, Hi5 and also Facebook detector. Unfortunately even though we have looked into the matter, and we have done some research, we found that there is no existing detector/scanner/checker of this kind. There is good news though, and that is that there are tips and tricks with which you can check if someone is invisible on Skype.
Our Yahoo detector is working very quietly, and no one can know if they had been checked out if they are invisible or not. This isn’t the case with Skype, unfortunately. The most common and obvious method is consists in sending a message to the user who you want to check. If on the right of a message there is a small circle that is going round and round like it wants to load something, than the user is not logged in to Skype. If that circle disappears after 3-5 seconds, than that means that the users you are checking out is logged in, but invisible on Skype.