If the point of the article was business, it wouldn't need to mention the name of the top 20 websites. It would focus on business.
>There is this newfangled phenomenon called social networking. People go to these websites, which track their friends and shows photo. They also have "Buy and Sell your Friends" applications, and the ability to poke people. Some people spent way too much time on these sites.
You don't think a link to facebook, orkut and myspace is appropriate?