Tracking the online status off your Xbox Live friends is easy on your iPhone or iPod Touch using 1337pwn. This application will allow you to not only see the online status of your Xbox Live friends but you can also view their avatars, games played, gamer points broken down by game, and easily send messages to your friends (opens a Safari browser window). Below are a couple images of the application in action to give you an idea of how user friendly it is.
By default the Skype application enables two annoying configuration items that can be in the way when using Skype. The first item is labeled Skype Promotions and will pop up an window over the top of your Skype friends list that offers deals typically on Skype services. The second item is labeled Help and Skype tips which is less annoying than the Promotions pop over however it still can get in the way and visiting the Skype support site will provide the same results. Both of these items are configured in the Skype client under Alerts & messages. An example of a Skype Promotion is displayed below and as you can see it will hover right over your Skype friends list.