Who owns what we post?
You own your original ideas, technically speaking. Just other people that view the board can use the ideas, copy it, or remix it into their own ideas as well.
As an analogy, say you buy a brand new red car, and you drive it on a public street. People who take a picture of the car don’t own the car, you do of course. They, however, own the picture of your car and can sell it, copy it, post it, whatever as they please.
It’s a little more nuanced than that. My understanding in the US, if you copyright your building, a person can’t sell the picture of your building standing alone, but can sell the picture of the landscape it’s in. In your example, If you took a picture of the car and said you designed and manufactured and are trying to sell it, that’s absolutely illegal. Litigating it and getting money from it is a different matter.
