[danudey]

The biggest issue I have is that they seem to have this idea of 'keep your chats open even when you're not around'; then when I open Skype on my iPhone, it downloads the last month of chat history, one message at a time, and is slow and useless (and chews up bandwidth, CPU, and battery) until I give up on it.

It's horrible design, and I can't help but think that no one at Skype has actually used it for anything, which seems improbable. I've heard that the Android version does the same thing as well. It's just terrible.