Used Skype for first time today for interview and it failed. Skype set up for Mac is incomplete at best. To get audio, you must go into system prefs then to sound and deselect soundflower and select Logitech Microphone. Apple should have a pref for Teleconference but I guess their focus is more on facebook and sending photos back and forth between your iPhone,iPad,Ipod touch than basic functions. So we had to communicate by telephone...that old low tech product...surprise..that low tech land line worked fine! Out of all the pull down menus nothing related to activation of this basic function...many esoteric concerns but nothing basic.