As well as Skype seems to be doing these days, the company has recently lost its Ethiopian audience since using the program there (or any other similar services) could land you in prison for fifteen years.
New legislation, passed this past month, criminalized using Voice Over IP (VoIP) services within the county. Those services include Skype and Google Voice.
It's part of the country's initiative to make everyone use the government-run telecom Ethio Teleco. That telecom now controls all video chatting, e-mail, social media and pretty much any and every form of communication possible.
The government can also now inspect any voice communication equipment that's been imported into the country.
The punishment for breaking these laws is up to 15 years in prison.