Is it fornprofit if I use it and somewhere in a small note on my website it has a way to give me a tip?
It's trivial to come up with more such cases.
And you being fine with my usage, doesn't mean I can rely on it.
And then let's go international.
In case of doubt the answer is to avoid it, which can be fine and match the author's intention. However it can be nom-trivial.