I think if you add the Freebitco.in as an addon to Google Chrome and for that they are sending him an extra Wheel of Fortune spin,at least this is what I understand from the picture attached in the previous post from him.

Nevertheless no matter which amount of Wheel of Spins you have they are added bonuses and you can get small benefits out of them.Personally I do not recommend spending at all Wheel of Spins now that the prizes are so low in the Wheel and the best would be to conserve the Wheel of Fortune spins when the prizes on the Wheel will be much better than they are now,this way you will maximize them for the better.