Question

This contains no new information but since nobody else seems to jump in I thought I could transform my comment into a short answer.

Many-worlds is just an (dont know how useful ...) interpretation of QM and is not (directly) related to M-theory or to the large number of vacua it has as solutions. These are two separate issues or concepts which are sometimes confusingly both called multiverse. So M-theory does neither refute nor accept the many-worlds interpretation.

Comments

Sorry for bumping up the question on the active question list but I assume there is no way to "quietly" add an answer ...?

This post imported from StackExchange Physics at 2014-03-17 04:14 (UCT), posted by SE-user Dilaton

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Nope. When mooching around the review section the inability to make ninja edits bugs me, since I can't make more than four edits in good conscience (it clutters up the main page)

This post imported from StackExchange Physics at 2014-03-17 04:14 (UCT), posted by SE-user Manishearth

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@Manyshearth I the edits are good and worth it, maybe You dont need to have a too bad concience ;-)

This post imported from StackExchange Physics at 2014-03-17 04:14 (UCT), posted by SE-user Dilaton

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well, good new posts on the main page get pushed down and neglected. So even if the edits are worth it, the impact on newer questions is pretty bad.. :/

This post imported from StackExchange Physics at 2014-03-17 04:14 (UCT), posted by SE-user Manishearth