Then one poster asks (and I include his/her icon for its appropriateness)...
ev1lkitkat : Why is Xander wearing an eyepatch?
Many give this response:
ohshiny : he got his eye poked out at the end of buffy.
But a clever poster had another, much more Xanderish answer...
isildae : Because he's taken a vow of piracy!
isildae, I don't know you, but somewhere inside I kinda love ya.