Can you provide a good example of someone doing this? I saw the Wikimedia example, and it didn't appear to me that they were hiding anything. So I'd be curious

Can you provide a good example of someone doing this? I saw the Wikimedia example, and it didn't appear to me that they were hiding anything. So I'd be curious to see an example of this being done well. Edit: To be clear, I'm looking for examples like Wikimedia, where the donations are being used for multiple things.