More than 33 billion online videos were watched during December and about a third of the them were on YouTube, according to comScore's latest figures. A 2008 study by Nielsen found that YouTube was 2-to-11-year-olds' No. 1 video viewing site (see this). So parents will probably be happy to know that YouTube now has its own filter for sexually explicit or violent content. "While no filter is 100% … [Read more...] about YouTube’s new tool for kid-safe viewing