Developer of Kippt here. If you have any feedback related to Kippt, we would love to hear about you. We're making some pretty big changes to Kippt now and they should fix some of the most requested features and add more use cases.
Alternatively, is there anywhere in Kippt I can see a list of all my hashtags?
I want to switch over entirely from Delicious, but being unable to see all of my tags at once is really frustrating.
Our API is pretty simple so you could also write a small script to move your links in the format you want.
Your Add-on has a keyboard shortcut? Using mouse for this purpose is lame and injury-prone.
How are you fundamentally different from Pinboard? Though, two things I could notice are that your add-on is snappier and looks better, at least on Firefox Mac; and I guess you listen to users unlike Pinboard dev).
Maybe this could be solved with a bookmarklet, but I havent found one in Kippt Tools section.