This forum is the place to go if one is looking for that elusive, missing Fanpopper:
http://www.fanpop.com/spots/fanpop-users/forum/post/6539


So, if there's an awesome 'popper that you haven't seen around for a while, go here and "look" for them.
If they are around or return to the nest,LOL,you'll probably hear from them.
Good hunting!