That's one of the things that should be linked to for further reading but it probably doesn't need to be given straight away.
The rate-limit error page:
Simply change that to this:
The last posting from your IP was less than <time> seconds ago. Please try again later. The thing you were trying to post was saved as a draft. This limit decreases substantially as your account becomes more established.
Code:
The last posting from your IP was less than <time> seconds ago. Please try again later. The thing you were trying to post was saved as a [url=https://bitcointalk.org/index.php?action=drafts]draft[/url]. This limit decreases substantially as your account [url=https://bitcointalk.org/index.php?topic=2766177.0]becomes more established[/url].
Thread is pinned so it must be good, right? You can get rid of most of those "how do I rank up?" threads when we can simply direct people to the answer during the first thing they'll probably encounter when they start posting.
And... something should be done about the off-site links in the Marketplace sections.