I asked this once before, but never got an answer. I'm sure one of the die hard survey takers knows!

Usually I only try once a day for OTX, because that was all I thought you were allowed to try for a long time. Lately, I've tried a time or two the same day. In between attempts on the same day, do I need to clear cookies? I'm not talking about when you get the button to try for another survey, I'm talking about when you get to the AMP/OTX page that says thank you for your participation, there are no surveys for you today.

I know I need to clear between actually getting one each day, but what about those multiple attempts?