I was doing some thinking...

[Bob Schroeck]

In the case of links out of DW, it's pretty simple. Most of the time it's things that are implied to exist elsewhere in the multiverse but aren't actually seen "on screen". For instance, the Dance of Shiva link is the result of a single sentence someone will say in the last chapter of DW5. The Bubblegum Avatar link comes because Craig Reed's SI character has a copy of Drunkard's Walk available to him (explicitly so, as Sylia keeps making him use Doug's name as an alias), and there's a similar echo back when Doug is given Craig's name as a cover identity late in DW2.

Technically, I suppose that Bubblegum Zone and Amanda Stairs' "Yumiko Asagiri" stories would also be indirectly linked to DW, because of the cameos by analogues of Bert and Yumiko in DW2...
-- Bob
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Then the horns kicked in...
...and my shoes began to squeak.