There are a lot of users on LW, and any one of them could like or dislike a comment or post for any reason. If you look at the score of a comment a short time after it has been posted, it’s very likely that your score only reflects the opinion of a couple of people chosen essentially at random from the whole voting LW user base. (Also, if you comment on older threads, you will have fewer people reading them, so this effect gets amplified.) It’s only over a longer time that the scores become reliably non-random. You should basically just ignore short-term score and only look at the comments/posts that have been up for a while, say at least 1-3 days for new posts as well as for comments in relatively recent threads. (I rarely post in old threads, so can’t offer a good number there, but I would guess that it could be much longer.)
There are a lot of users on LW, and any one of them could like or dislike a comment or post for any reason. If you look at the score of a comment a short time after it has been posted, it’s very likely that your score only reflects the opinion of a couple of people chosen essentially at random from the whole voting LW user base. (Also, if you comment on older threads, you will have fewer people reading them, so this effect gets amplified.) It’s only over a longer time that the scores become reliably non-random. You should basically just ignore short-term score and only look at the comments/posts that have been up for a while, say at least 1-3 days for new posts as well as for comments in relatively recent threads. (I rarely post in old threads, so can’t offer a good number there, but I would guess that it could be much longer.)
I would add to this that the sign of net scores within a couple of points of zero doesn’t provide very much information, regardless of age.