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You'll notice a new button on forum posts: "Tip Post." When you click it (and give a quick confirmation), you'll instantly give the person who made the post 25 Gold from your account.

You can use it any way you'd like: to show appreciation, to signal agreement with a post, to donate to a good cause, or even to offer a contemptuous little show of pity.

You can check how many tips a post has received by hovering over the button and clicking the "Tip Jar" link. For more info, click the "What's This?" link.

Remember: begging for tips is just like begging for Gold; it may be regarded as noobish!