Content creation by teenagers continues to grow, with 64% of online teenagers ages 12 to 17 engaging in at least one type of content creation, up from 57% of online teens in 2004.  Fueled by new technologies, websites, and social network domains such as Facebook and MySpace, large numbers of teens share and create materials online. 

We know all about user-generated content, masses of users contributing to burgeoning Web corpus. It’s a manifestation of Web 2.0, the participatory Net, which companies like Google (YouTube), Yahoo (Flickr), Fox (MySpace), etc. are feasting on. In parallel, users are contributing a potentially far more lucrative Web currency–metadata about themselves. It’s the currency that will help Facebook grow into its $15 billion valuation. In addition, users are also contributing structured (meta) data about data, which will help the semantic Web to flower.

Anyone who has spent more than an hour online in search of a job or looking for a friend can attest to the vastness of the digital world. Yet, it is debatable whether most people accept that, in fact, the Internet is a much larger entity than we ever conceived of. The Internet is a digital social network connecting people through the web pages they establish and the links they post. It is the links that are posted on the web that connect people to one another as nodes in the vast digital network. Most people have heard of the concept of six-degrees of separation but achievements in network mapping have provided evidence that people are actually more closely linked to one another than six degrees. The impact this has on our understanding of the job-hunting market is that we now have proof that people are much more closely connected through one another to potential jobs than through individual pursuits of potential jobs.

Nielsen//NetRatings announced today that among U.S. visitors aged 12-17, visitors to both MySpace and Facebook spend more time at each site than those who visit just one or the other. In August, teens who visited both sites spent on average 20 percent more time on MySpace than MySpace visitors alone. Facebook benefited to an even greater degree from dual visitors, who spent on average 26 percent longer at the site than exclusive Facebook visitors.

comScore, a leader in measuring the digital world, today released a study of UK traffic in July to a selection of leading social networking sites.