Do simple metaphors help people understand Bitcoin, or do they make it seem more private than it really is?
I’d like to hear how others here explain Bitcoin’s transparency and pseudonymity to newcomers.[/list]
Metaphors are not meant to explain a thing completely. That is why it is called a metaphor. It's only used to help people have a better understanding of something. Using the metaphor, they are two different things, so they can't fully explain the issue, but you can use it to understand the topic better.
I have also used this forum as a metaphor in explaining Bitcoin before. Everybody on the forum does not know you (except you reveal yourself). You make a post that everybody can see and can be linked to your account, but nobody really knows the person behind the account.
This is merely a metaphor; there is so much difference between the forum and bitcoin, and you can't fully understand the security or privacy levels of bitcoin simply by this metaphor. You have t learn about it first to fully understand it.