Yes, I signed up.
At 10am, I was able to be nearly first in line (still put in the queue, though).
One of my confirmation e-mails was delayed, so I panicked and tried to log back in.
At 10:30, that attempt put my in Queue It with over 900 people ahead of me. I got in at noon. There were still lots of spaces in the camps that interested me.
Stick with Queue It! It seems to work, and it keeps you place in line.