People actually use MSN? On any system?? I dont think I know a single MSN user on Amiga, PC, Windows, Mac, Linux, VAX, anything. While I'm all for writing tools to enable minority systems like Amiga and Linux to access proprietary networks and programs, MSN wouldnt be my first choice.
That said, if you're doing it, why not continue? Even if it doesnt get much use, it sounds like a good mental challenge, and it may benefit someone.