With the introduction of Area 51 we are beginning to see a number of sites that have content which overlaps with Stack Overflow in some way; a few that come to mind are Web Applications, Pro Webmasters and Game Development. Although most of them target a more narrow subject area than Stack Overflow is meant to, there are some cases where a question posted on Stack Overflow would arguably be a better fit for one of the Area 51 sites.
My question is whether we should vote to close/suggest to migrate the sorts of questions that aren't an ideal match for Stack Overflow now that there are more specific alternatives?