What kind of shortcut are you looking for? I've thought of a couple of possibilities:
1. Display a list of your comics at the bottom of the posting form (much like the pull-down on your homepages) and allow you to select a comic to attach.
This would be nice and convenient, but it would also slow things down a fair amount, I think. And for people with huge comic lists who post a lot (nudge nudge) it can add a substantial amount of data to every posting form page.
2. Fix the comic tag so that it uses the entire URL of the comic instead of just the ID number. So that all you have to do is cut and paste the URL rather than getting ID number off of the end of the URL.
Then I could add a ctrl-shift-c macro to allow you to enter comic URLs easily and it would automatically put comic tags around them.
Personally I'm leaning towards the second option.
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