I think that you need to warn people about this in advance. Write in large letters in the first post of the topic. For example, in SEMUX there was also a testet, but the coins were transferred to the main network. In general, I like the idea of a webdollar and I will follow it.
For that we need to make hard fork on the protocol and we want to keep it as clear as possible. We want to have a fair start for everyone to know start mining in the same time.