How to make this a killer app...
Here's my 2 cents regarding features that need adding / working on...
* Support more IM protocols (Windows Live, Facebook) (most of my contacts are on facebook)
* Support Voip (skype, Windows Live)
* Support Video-voip
regarding Voip, it would be a sensible idea to have a setting where if set, voip is temporarily disabled when using 3G/GPRS connections, as a lot of operators don't allow voip with their data allowances (or use port 80 as the rest are usually blocked).
Being able to video call to Live Messenger and Facebook chat will do it for me.
Anyone else who wants to add to this list, please feel free (that is what feedback is for, isn't it?) - and admins, please feel free to make this sticky.