You may want to add or here's an other tip:

When you don't qualify for a survey through Y2C and it says
"take another survey or try for another survey" and gives you a button to click on, you CAN click on it.

BUT If it says "were sorry, no survey's available" you MUST close out that window entirely and go back through the main SR page to access Y2C to try again. I learned my lesson the hard way, way back when.
You'll be able to complete a survey BUT you won't get credit for it, if you don't close out that window and start over.
I originally just tried going back through it using the back button and that won't work.

Also TRY these ONLY after your DS bc it could effect you getting a DS therefore going for the DS bonus.