After Ben killed Keamy and the ship blew up wasn't the threat to the island eliminated?

Did Ben just have to move it anyway since Jacob said to?

I mean he said "last resort", but the island was safe, right?

I'd love to hear Darlton try to answer that one...

I think Ben went ahead and moved it so widmore wouldn't find it again.

I may be wrong, but I assume Widmore learned how to access the island, and he would have just sent another freighter.

Well the freighter DID find the island. So i'm assuming other people knew where the freighter was going.

I may be wrong, but I assume Widmore learned how to access the island, and he would have just sent another freighter.

Yeah. Widdy is bound to have known where the freighter was located - GPS or something. He could easily have found the island again if it hadn't been moved.

-AJF

I thought it was pretty obvious. If Widmore found the Island once, even with the freighter destroyed, he could find the Island again.

Exactly! If Penny knew where the freighter was, then Charles knew as well. The island was compromised and had to be moved.

I thought they were moving the island simply because Jacob said to move it. We weren't privy to the conversation between Christian (speaking on Jacob's behalf) and Locke in the cabin, so we don't really know Jacob's reasoning for moving the island, do we? It might not have necessarily been Keamy & Co. that were the reason - possibly their arrival and etc. just coincided with Jacob's grand plan.

Of course I'm just spitballing...

Well yes, Ben moved it because Jacob told Locke to. But the question of why Jacob was moving the island is (as others said) because Widmore knew where the island was. I don't think that freighter set out to "find" an island. Widmore had a very, very good idea (if not spot on) of where the island was. That had to be changed.