A couple of links from around the philosophy blogosphere that are relevant to our lives:
Modal and Temporal Irrelevance discusses a version of the "Lewis's view is irrelevant to modality even if he's right about there being other worlds" and considers a parallel argument the presentist might lodge against the eternalist.
Lewis on Natural Properties part 1 and 2 contain detailed discussion of, well, Lewis on natural properties.
Does Lewis Reject K? considers whether Lewis rejects K ((A --> B) --> (A --> B)), the fundamental axiom of all standard models of modal logic.
And finally, a couple of papers:
"Are Shapes Intrinsic?"
" Haecceitism, Anti-Haecceitism and Possible Worlds: A Case Study"