http://www.uesp.net/wiki/Skyrim:Speech

I have the Bribery perk but I don't have any new dialog options when confronted by a guard. My bounty is only 1000 gold.

So what is this perk supposed to do? Is this a bug?

(This is a much more specific question than my original: http://www.gamesas.com/index.php?/topic/1299064-how-do-you-bribe-a-guard)