It's just a delay before the comment link appears. Come back in a few minutes. (The delay depends on how deeply nested the conversation is.) I think this sort

It's just a delay before the comment link appears. Come back in a few minutes. (The delay depends on how deeply nested the conversation is.) I think this sort of cooling-off period is a reasonable compromise. Coming back in five minutes should not impede a thoughtful conversation that's important to you. Meanwhile, it (hopefully) prevents some knee-jerk reactions or two-person threadjackings that are common on a lot of other sites.