The Brief’s roundup from last Friday includes a good sum up of why you shouldn’t be using Skype. The low down: They’re too surveillance-friendly. Zero out of four stars according to the Electronic Frontier Foundation.
Google (Hangouts) and Apple (FaceTime) both rate more highly, although you shouldn’t ever assume your communications aren’t being monitored. Even Off-The-Record chats can get you into trouble if they’re being logged.