Interwiki etiquette

There are a number of issues to be thought about in developing good relationships with other wikis. We need to think for example about respecting their seperateness and balancing the need to use their material with the need to link to it. As a meta-level wiki in the sense of covering a whole knowledge domain it would be wrong to absorb everyone else's material into our orbit. We need to think about the good manners of exchanging material, parallel structuring etc