this is what i heard from friends about FB games, in particular
farmville
a) colleagues goes on hols overseas e.g europe, passes FB
password to niece/nephew so that they could help him farm
b) one of the guys in one of my run groups used to excuse
himself early after runs/not stay back from chit chat so he could
go home to collect chicken eggs or harvest whatever
plant/veggie
c) one guy was gonna be holed up in camp for 2 weeks for
reservist...sent out SOS message to friends on how he can keep his
farm alive/what hardy plant to plant or those that don't need much
maintenance
d) the usual SOS calls/messages i get - please help me...please
click this and that so i can get/buy more chickens/cows etc
really
there are people like that? ahahahahahaha
i just anyhow plant and put animals until no space left, so i
deleted the game and blocked the game updates 
i just click click a few games here and there.. and those which
do not require a lot of time 