CLW: Contact List Window
CC: Contact Card
WLS: Windows Live Spaces
WLMß: Windows Live Mail ßeta [The desktop Client]
WLH: Windows Live Hotmail
WL: Windows Live
WLOC: Windows Live OneCare
SF: Sharing Folder
MS/M$: Microsoft Corportation
Hope I was helpful.
EDIT: Thanks wamth for notifying me about the spelling-mistake. : )