About different users and their alts on the site, why not just mute them? Or stop replying to them at all? If you really have a problem with them, just don't post in their threads.
Sometimes the simplest solution is the best one.
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You've only give them more attention with this! Honestly i've started muting a lot more people lately, at least 5 in the past few days, i'm going to try and focus on making what Recon said as "my personally preferred preference" of how the site should look.