It's toxic. a form of oneupmanship social capital. we all use it subconsciously to big up people (with the loudist voices / I'm not absolving myself here) but that can mean not engaging with people properly or really having to think through what they say. or more prosaically it being halled out as a form of character judgment. It does not indicate that the post is actually useful, it's analogous to head nodding. this is why i propose that we get rid of the button so that more quoting, measured and thoughtful responses can be encouraged.