As often as you want - in fact, the more the better!
As more people share new thoughts you will have the opportunity to rate those new thoughts. They might even spark new ideas for you to add, kinda like a vicious circle of positivity and good vibes.
There’s an old saying around these parts: rate many, and rate often. As you rate thoughts, the most impactful ideas rise to the top and stand out among the others. It’s in everyone’s best interest. Like a pizza party. And who doesn’t like a pizza party?