Books go digital

Sick of lugging hefty books with you on vacation? Portable, electronic readers -- with their easy-on-the-eyes displays and ability to carry hundreds of titles without gaining weight -- started to make inroads on their hardback cousins in 2009.

E-book sales brought in $13.9 million in revenue in the third quarter of last year, according to International Digital Publishing Forum, a trade organization. The same time period this year saw $46.5 million in e-book revenue -- a 235 percent spike.

The Amazon Kindle, originally released in November 2007, found some competition this year with the release of the Sony Reader and Barnes & Noble's Nook. Meanwhile, libraries, authors, publishers and Google continued to haggle out the details of a settlement that could give the Internet giant permission to create the world's largest library -- online only.

Smartphone craze

By the end of 2009, having a basic cell phone wasn't good enough anymore. Now the standard is a smartphone -- a mobile phone that also acts as a computer -- and links its users to Facebook, Twitter and the rest of the digital universe.

Despite the economic recession, the smartphone market expanded. It was fueled in part by the popular iPhone but also by an increasingly diverse set of smartphone choices, including the Droid, BlackBerry and Pre. Smartphone sales worldwide for 2009 were up 24 percent compared with 2008, according to Gartner Inc., a research company.

Thanks to these phones, people this year grew accustomed to sending e-mail, uploading photos and videos and posting status messages from anywhere, at almost anytime.