Post rating is well, pretty much removed from most fora after, erh, around month or so. The problem with most fora is that the rating system just asks to be abused. Sometimes it isn't used to 'rate the post', but to 'rate the user'. And the fun thing is, people can do this anonymously and without reason, so nothing holds people back from 'I don't like you so I'll rate your post low'.
Now, this is very community-dependant and I've been here for what? A few weeks? So I can't sketch a proper image of the community. But going by the stereo-type of large, popular fora; it attracts many 'immature people', for the sake of lacking a better term. I mean, the forum's big, nice lay-out, high up in the search engine, etc.
These people are the ones that rate 'low for fun' and 'rate the user'. A counter-measure to this could be is forcing the member to have been around for a while, or require a certain post count, or require a certain number of positive ratings him/herself. Then again, it may be an unwanted support to an elitist-attitude. Adding to that, when people have a low rating, they get an instant 'hi-I-look-down-on-you-and-your-less-than-3-stars-rating-treatment'. It's also a curse for people who 'mature' during their stay, improve on RP'ing and attitude, but just won't get rid of the negative ratings.
Or limit the ratings to a certain number per day. Which would force people to pick more carefully. But yeah, on the other hand their priorities may be 'rate the user' and the limit will mean that certain posts that are either epic or awful get little to no ratings, because the posters aren't that 'hot' in the community.
The only real counter-measure would be moderation. The requirement to add an argument to the rating which would have to be approved. But this means more work for the staff. I'm not saying anything bad will necessarily happen, like I said;
Kestrel wrote:Now, this is very community-dependant and I've been here for what? A few weeks? So I can't sketch a proper image of the community.
But the chance is always there.
As for rating all posts. Someone may be an incredible bitch but an awesome RP'r. Or a very nice person and an awful RP'r. So the ratings won't really be accurate when people rate both IC and the other posts.