"You are almost out of credits, buy more to enjoy Skype!"
This is the kind of ad and orange circle notification I see because I have 5 cents left of credit. I recently purchased subscriptions to make my credit balance basically irrelevant. There should be some way for me to indicate that I have no intention of increasing my credits so I would not be bothered by these nonsensical notifications. In fact, I wish there was a button that would let me donate the 5 cents to a charity, but only if I am then not also told, "You don't have credits, you should buy some." This is a usability problem mostly since the service - unlike others - is working for me. I am willing to pay for the service, but the whole experience should be smarter and more thoughtful.