Sorry but I don't see why bumps are so bad.
If on a legitimate discussion thread or on a help thread, I don't see a problem. Someone may of made a good discussion thread, it went un-noticed and then they bump it and maybe a convo starts don't see the problem.
Someone asked for help, no replies so they bump and then maybe someone notices it. I don't see the problem with bumps on legitimate threads.
If a discussion thread is so good, it would be bumped by a response.
If a problem is fixable, it will be bumped by an answer.