Patricia G. Lange, Kids on YouTube: Technical Identities and Digital Literacies, Walnut Creek, CA: Left Coast Press, 272 pp., $34.95 (paperback).

Nowadays, social media is inundated with videos of children and families, depicting everything from seven year olds' birthday parties to high school graduations to a toddler bouncing on an inflatable mattress. In this video-rich environment, it is hard to recall that only a decade ago posting a video online was a difficult task, accessible only to the tech-savvy. The advent of the video sharing site YouTube in 2005 was a watershed moment, making uploading and sharing video much easier and more popular. Less than a year after its launch, 65,000 new videos were being uploaded to YouTube every day (Reuters, 2006).