I've wondered if some of the Sins players who might otherwise play online end up getting confused by the way the LAN and ICO buttons are labelled. For LAN games the buttion simply reads "Multiplayer", which would lead me to think that that's what you click if you want to play online. In the meantime, who the heck is going to know that "Ironclad Online" is where you go for the online multiplayer game.
Thus, for an upcoming patch, I propose that the buttons be renamed:
Multiplayer could change to LAN Games.
Ironclad Online could change to Online Multiplayer.