[mothered]

You shouldn't need to apply deep thought to liking a post. That's what reputation is for.

It depends on the nature of the post, no two are equal.

If It's an In depth tutorial and you're trying to determine It's quality, accurateness and effectiveness, then a lot of thought needs to be generated prior to Liking It. I wouldn't be hitting the Like button on a post (tutorial) that's completely misleading, plagiarized and minimal thought generated by It's contributor.