In case anyone is wondering why we require people to make a post to see the contest entries (in this and other contests)-
Every day we get between 10-50 bots sign up. Most of them do nothing, but some of them copy&paste the entire forum and mine it for data. We've had cases where parts of the forum were replicated elsewhere. This isn't a big deal most of the time, but if a contest entry gets copied elsewhere on the internet, the author may lose the ability to publish it later. This is all rather unlikely, but we don't want to take even minor risks with our contributors.
Also, because of the bot problem, we regularly do forum purges and delete all inactive accounts. Posting once makes you safe from that purge. It would be rather inconvenient to everyone involved if you created an account, started participating, and then it got deleted, so that's another reason we want people to post before they do anything else in the contest.