MiniHack for iOS is great
Personally, what has worked best for me is an RSS aggregator (I use NewsBlur) combined with a good RSS Reader like Reeder (iOS and OSX) [no affiliation with any of these products].
This way I can sync my ‘read’ entries, favourite my faves, and Pinboard the ones I found really useful for later reference.
I think I encountered the problem with editing your own posts but I post rarely on mobile and when I do I'm in a hurry. BTW a HN sandbox would be cool where you could test these things without causing noise.
What is the problem with the voting you mentioned?