Once of my biggest pet peeves with Skype is the way presence notification permissions are handled. The default way to make contact with somebody seems to be "add them to my contact list" which then initiates a message exchange of "Can I see when you are online". The problem with this is that and once granted, presence notification permissions live on the other person's computer and _cannot be revoked_. Removing them from your contact list does not prevent them seeing your online status and blocking them outright is the only solution. This is overkill however since I may wish to be able to receive calls/chats from them still but don't want to broadcast my online presence to them.<p>While I can of course change my status to invisible, this is a global setting and affects all my contacts. I now live in a permanent state of lurking on Skype, because so many business contacts have initiated contact with the "can I see you online" and would have taken offense if I simply said no.<p>In short, I would love to see better presence notification options in Skype including the ability to revoke permissions and to partition people into groups and assign a corresponding status to each group.