This project has been going on for over a year and a half now. I have discovered the coding is not one of the main delays, it's the competition. Microsoft and Yahoo! want their intergration to be as good as Google's and AOL's and are watching the progress like a hawk. I have also discovered Yahoo! intergration was chosen for a reason rather than any other client, that being the type of protocol (SIMPLE) used .
/ 
.
