This is complete speculation on theymos part and yours though. There is no real reason for us to think that posts contained his real name or address. That doesn't sound like Satoshi at all and its much more likely that the posts contained test posts such as "test" or "hello world" to test the forum software. I know people like to jump to exciting conclusions and discuss conspiracy theories but lets have a look at the facts here. Satoshi started the forum with the name Satoshi which he intended on keeping as his identity. Google search results show no usernames on other sites that are even close to it. We know this because experts in the field have already researched into this. Do you really think someone as privacy conscious as Satoshi would put his identity on the forum? I don't think so not even for a minute. It was far more probable that the first posts of the forum were of low content and for testing purposes. The current first post (number 4) makes sense as a introductory to the forum because current members will always be interested in the first post of the forum. Just look at the merit received by the first post and you will see that people do check these things.