Just want to say that if it's free, why do I even need an account to see for example this:

http://www.kivalia.com/plans/moderate-portfolio/226/oracle-c...

All I have to do is right click and 'delete node' in Chrome, and I get to see everything without an account.

Also, I could just go to the javascript console and run this: $.unblockUI();

If you are going to block people, at least do it right.