I propose that it cumulatively costs mod points to mod up or down. Mod points can be accumulated from a number of different accounts working together to mod a post. E.g.
Mod is at 1 - going to cost 1 to mod it up or down Mod is at 2 - going to cost 2 to mod it 1 point up or down Mod is at 3 - going to cost 3 to mod it 1 point up or down. Mod is at 2 - going to cost 2 to mod it 1 point up or down. Mod is at 1, 0, -1 - going to cost 1 to mod it 1 point up or down.
Karma is still deducted a point at a time. Makes it much more expensive to karma bomb people. At the moment, if a post is at +5 and you want to bomb to -1, no worries, 6 accounts. Under the new system, 5 + 4 + 3 + 2 + 1 = 15 accounts to bomb a post down to -1 from 5. GNAA, goatse etc will still only cost 1 to mod into oblivion because nobody ever takes that up to 5 in the first place. It will make factually inaccurate posts harder to mod down, but at some point you need to make a choice - what's better, factually inaccurate (which may never go away), or antisocial behaviour (karma bombing, gnaa etc)?
Carl Sagan said, "The beauty of a living thing is not the atoms that go into it. But the way those atoms are put together." In the same way (albeit macroscopic), humans will improve and deepen their existing relationships between each other in order to live in this new global world.
The hallmark of any system is aggregation and connection. Technology is playing a huge role in furthering these concepts. You are all witness to an amazing period in history, have a nice day.
Do not attribute to malice what can adequately be attributed to stupidity.
Could it be possible that employers are seeking to "keep the black man down" out of stupidity, and not malice?