How to prevent some of my friends from adding me to their close friends list on facebook?

[Misha]

[Russell]

You can't prevent anyone from adding you. The only thing you can do is decline the actual friend request itself.

[abraXus]

you cannot prevent that, but you can add them to your restricted list which counters the close friends list

http://abrax.us/Facebook/RestrictedList.php

[Angeleyes]

Unfortunately you cannot do anything about that, all you can do is add them to your restricted list.

[BatFink]

Delete your FB account and go outside