As of 2015-02-03, all new accounts start at Guest rank. (Check your membership rank in the upper right corner of any DIME page while you're logged in).
To be able to participate in our torrents, you must email the moderators to request a promotion to the Power User rank):
http://www.dimeadozen.org/extras-contact.php
Your message must come from the contact address in your DIME profile, and its text must specify your username (but NOT your password!) as well as stating your reason for writing.
All such requests are reviewed by management and processed manually. We will try to respond within forty-eight hours; allow us at least that long before writing again or reminding us.
Before you send it, or while you're waiting to hear back, we strongly recommend that you read our cautions for new members at this page in DimeWiki: all DIME members are expected to know the information there.