so there are other islands grouped around the "Lost" island...

I'm thinking Michael and Walt were sent to one of the other islands

I gaurantee we see them again..as Benry said to Sawyer "THere is no escape"

i think the direction given by Benry to Mich/Walt was straight to their other island.

And now THEY are "others"

i dont know its really hard to tell now Ben said that he would not harm K/J/S and already theyve taken quite a beating so they do not stick to there word all the time my guess is Other Island or Lost out there somewhere would be good if they cleared it up cant see them rejoining the losties would be a unpleasent welcome back.