If something is tagged, and I want to add a tag, I use 's' (shortcut). However, in order to enter another tag I have to hit a key, such as 'Enter' or an arrow, and then type. I'm not sure what the right solution is, but it would be nice if this was smoother. You already support 'Enter' to autocomplete a suggested tag, I suppose you could also use 'Enter' to accept the current tags and immediately place the cursor at the end...not sure, I just know that I keep wiping out tags as I hit 's' then want to start typing my new tag...or I keep hitting 's', then 'Enter' thinking it will accept my current tags and let me start typing.