The ability to link cross site duplicates
With the growth of the Stack Exchange 2.0 site, there are multiple users that are actively participating in multiple sites. With this in mind, I would like to suggest an option for "Vote to Close" to be able to facilitate a "Vote to Close as a Duplicate of ANOTHER SE site". For example:
Found on Super User is this question:
Which is off-topic, and would be better suited on Web Apps. However, there is already an answer to that question there:
Note: This question was actually closed as off-topic, however I'm just using this as a readily available example.
Here's another example:
But on SF:
What would be nice and in the end less work for mods and other SE sites is the ability to Vote to Close as a Duplicate of another site.