Ecommerce: Gift Cards are BIG

Bloomberg News and other sources report that 74% of all holiday shoppers will buy a gift card for someone on their list–bringing the projections for gift card spending to$17.3 billion. According to a recent Deloitte & Touche USA survey of 16,000 consumers, gift cards are the top holiday gift among shoppers this year–a 4% increase from last year. Interestingly enough, one effect of this (newish) behavior is that a higher percentage of holiday sales get pushed into January when the cards are (usually) redeemed.
Is anyone tracking what percentage of gift cards will be purchased online? Or redeemed online?