How can you tell if someone blocked or is ignoring you on Skype?
In case someone has blocked you from Skype, his or her picture will not be visible, you can also see contact numbers but the status tip will be offline. If you are blocked and deleted, you will not be able to see the picture, contact numbers and cannot see status tip. Checkout more on http://community.skype.com/t5/General-Discussion/How-to-tell-if-someone-is-blocking-you/td-p/183846.
just be silent