EQO took a key compromise when it came to actual calling, but one they had to make. They are not using the GPRS network as a bearer for VOIP calls. Instead, they get your Skype account to generate a regular Skype Out call. This way, your phone and your PC are connected via a regular phone connection and the VOIP network is used from your PC using your (assumed) higher speed internet connection. There are a few main advantages to taking this route. One - voice quality and reliability are excellent. Two - it constitutes a business case for carriers. Three - it allows for quick deployment of J2ME clients across carriers and devices (a next to impossible task if VOIP over GPRS were selected). The main disadvantage is one and a primary one - you must have Skype Out credits. Most Skype users I know do not have those. I do, however, and to me this represents a great way to take international calls with my mobile at a fraction of the price. It also allows my friends to not think twice before they call my mobile from overseas.  Which leads us to mobile Presence and it’s role. Truth be told, I mobile presence draws a lot of reservations. I think there should be a clear use case and a solid application wrapper around it in order for it to make sense. After all, I carry my mobile phone with me the whole time. I do not want my MSN buddies or my phone contacts to sense when I am in the bathroom or know when my private parts are so-called exposed. Do you? Getting IM nudges on the mobile phone can be annoying. Ignoring those nudges can be insulting. Privacy is not a slogan, it’s an elementary state of mind which I expect my mobile phone to respect. However, the EQO case is different and they make perfect sense of mobile presence. When I expect an international call, or when I wish to make one, it makes perfect sense for me to look for my Skype contacts or to be available for my Skype contacts.