Replying to an old thread doesn't make sense, because the person you're replying to has most likely moved on. At the very least, they've moved on from that issue.

Starting a new thread to ask a question that's already been asked doesn't make sense, unless you have reason to believe that the answers have changed.

Starting a new thread to rant about something that's frequently ranted about is a wee bit selfish.

Abusing minimum-wage retail workers who are only doing their job is the act of a bully.

Shopping at Wal-Mart is cutting your own throat.