Hide Your Online Status From Selected Friends:

So you want to use Facebook chat but don’t want some people to see your

online status?

Simply open up the Facebook Chat and click on Friends List. Start creating a

new list

called BlockList.

Once the list is created, add those friends to the list that you want to appear

offline to. When the list is complete, hover your mouse to the little green icon

adjacent to the list and click Go Offline. Bingo! You will now appear offline to

everybody in the BlockList.