My "For Further Research" Paper

The article that I chose to read was a report on a study done in 2006.  This report explained that about half of teens were using social networking websites.  Clearly, this statistic has increased drastically in the last six years.  This is what confuses me about books on technology.  It is impossible for books to have up-to-date information because technology is constantly changing (like Apple's laptop wheel)!  It seems like we need an online "textbook" that is frequently updated in order to keep up.