Before the orange names, I refrained from commenting if I thought it was likely my comment would end up being downvoted to 0 points or less. Now, I'm likely to refrain from commenting if I think my comment won't get upmodded to 5 points or more (4 upvotes), because anything less would be net-negative on my average karma target of 3.5.

I see this as having a similar effect as initializing each post to -3 points (or maybe -2.5). I'm afraid this may lead to fewer genuinely thoughtful comments that might lack a populist appeal because the poster thought twice about posting at all.