I often accidentally click hide, have to navigate to my profile, click 'hidden', click 'un-hide' then have to go back to the front page and find the post again.
It could simply be replaced with an 'sure? yes / no' right before hiding and this problem would disappear.
Same goes for 'flag'. In fact, sometimes I'm not even sure if I've hidden or flagged the link and I have to check both.