This is a quote from another post
I agree with jan_gates05
...all of this has something to do with all of the survivors coming to terms with bad things they have done or lived through in their lives.
If people remember episode 7 of series 2, Goodwin says that they try to take the good people whos names were on the list.
If you also remember they tried to take Eko but he managed to get away from them. Does this mean that th others want to only take thegood people and leave the bad ones? If so does this mean that they will come back for eko???