Texting has surpassed other forms of communication for teens aged 12 to 17. Real-time ad bidding is projected to account for 8% of digital ad spending in 2011. At $8.5 million, Facebook's purchase of the domain name FB.com from the American Farm Bureau Federation was one of the top 10 largest domain sales ever. Nearly half of 25- to 29-year-olds in the US live in wireless-only households without a landline.