So given the choice between 'hits' and 'likes', I'm sold on likes
Is it an either-or choice? If it is, I didn't realise.
But I'll go for hits. That tells you how many are opening the post, whether or not they do anything. Maybe I'm out on-a-limb here, but when I start a thread I want to know if it's of interest to others. A 'hit' comparison with other threads gives me that.
Okay, I'm not sold on 'likes'. It has a touch of popularity contest, IMO.