"People are insanely curious, everbody will scratch,
nobody will pass up the chance to win something,
as long as you don't make it too difficult."

Increase your website stickiness. People will keep visiting your website if they know you're always offering them a chance to win valuable prizes and gifts via scratch cards.

Balloon your opt-in list. People will give you their names and email addresses just for their chance to scratch and see what "Prize" it's hiding. In this method, you get their names and email address before they play (this can be turned off).

Don't give it away let your visitors win it with 1:1 odds! Instead of "Get your free report", try: "SCRATCH & WIN our $99 report!"

Completely customizable. Let your website visitors know of any product you want. How? By having its image displayed on the scratch cards!

By the way, the scratch area itself can be any image you want! What a great way to bring your visitors' attention to any product you want to promote!

Increase your affiliate commissions by running stealth, promotions of affiliate products.

Many affiliate programs offer discounts and free trials, let your visitors win access to these and they will be even more apt to buy.

You could also increase your affiliate commissions that allow incentives by giving scratch cards to people who buy through your affiliate link's for a chance to win prizes.

Increase sales of your own products!