If not, nothing can be blocked, of course. You must use OpenDNS to use its features. I too have added the youtube.com domain to the block list. All of my pc's DNS queries are correctly going via opendns, as the web filter is working for other sites in the block list, on the pc's. It would seem youtube.com is the only website where on any pc, it can still be accessed.
According to the Federal Reserve Bank of New York, outstanding student loan debt in the United States lies between $902 Billion and $1 Trillion with around $864 Billion in Federal student loan debt. As of Quarter 1 in 2012, the average student loan balance for all age groups is $24,301. About one-quarter of borrowers owe more than $28,000; 10% of borrowers owe more than $54,000; 3% owe more than $100,000; and less than 1%, or 167,000 people, owe more than $200,000.
According to data from the U.S. Census Bureau and the Federal Reserve, American households owe on average a staggering $16,425 in credit card debt, and that amount has risen 10 percent since 2013. Collectively, we owe nearly $1 trillion in credit card debt, on which we pay an average interest rate of 18.76 percent, or about $1,292 per household each year.