Updated forum rules (new-user post moderation)

[counting_pine]

Just so you know, I've decided to update the forum rules, so that a user's first three posts will no longer be moderated
It seems sensible, given the following:
- It probably puts off new users from hanging around
- I've seen very few spamming attempts recently
- With the (relatively) new forum, any user has the ability to flag posts and bring them to the attention of moderators

We'll give it a go. If spam starts leaking through, then we can rethink.

[Tourist Trap]

Spammers seem to have migrated on facebook!