Question: If I create a golden card, are there any special perks in battle? I am just wondering since I am planning to level Anduin to 15 and get the golden Mind Blast and I want to know if there are any perks. Thanks!

Answer: 
The argument [has been made](http://www.reddit.com/r/hearthstone/comments/26jfqy/this_golden_card_is_weaker_than_its_normal_version/) that gold cards could actually hurt you in the case where you have a golden card and a non golden card of the same card in a deck. If your opponent thought steals you and sees one of them, then you played the other, they now know you have another of that card in your deck.
Just adding to another good answers, looking Golden Soulbounded cards can tell you an estimate of opponent level. By example, if your opponent has a Golden StormWind Champion, your opponent is level 59/60 with Paladin class!

<http://hearthstone.gamepedia.com/Paladin#Level_11-60>