(It's so frustrating we've actually made a mini-game out of it - stump the designer!) These people create interface for a living, and many have used Skype for years, and that basic bit of functionality is rendered opaque even to them. On the show we interview some of the best app designers in the business, and you know what? Almost none of them can find the do-not-disturb toggle on the Skype interface when we ask them to turn it on.
It's not just sync that's silly about Skype either, it's basic interface. Message sync might be broken, but at least it exists. Favorite them just perfectly on one machine and know what you get? Absolutely nothing on any other machine.
We use Skype as our primary communications system here at Mobile Nations - no, we can't switch to Hangouts because it's not cross-platform - and that means we have a lot of people we contact frequently, and a lot of semi-permanent group calls and messages we send. VPN Deals: Lifetime license for $16, monthly plans at $1 & more