[matheusmoreira]

Not at all. It tells you someone didn't like your post. Don't think it's possible to infer anything other than that. Many times I've had posts oscillate between negative and positive scores. It's very likely there are people who agree out there.

[Semaphor]

When certain comments get consistently downvoted, that’s not someone not liking your post.

[matheusmoreira]

There is no consistency. I have a comment at -2 right now. Over the past few days it oscillated between positive and negative scores. Someone replied to it and my response is currently +6.

[southernplaces7]

In those cases its multiple people consistently disliking your posts. This doesn't necessarily make their downvotes any more valid or intelligent, or the post not worth seeing.

[redsky880]

What law of physics or probability prevents a comment from consistently getting downvoted due to a disagreement in opinion?

[Semaphor]

None, but downvoting because of a disagreement makes you an asshole, so that still tells you stuff about the community, or at least those active in certain threads.