Spamming
Spam occurs if identical pages are submitted to the same category multiple times, if one site is submitted to multiple inappropriate categories, or if a submission otherwise violates our Submission Policies or disrupts the ODP. One trick sites will use to try to get multiple listings in the directory is to submit their site (or similar versions of their site or sub-sections of their site - "Deep-Linking") under different registered domains. For example, Wonder Steak Company might submit both www.wondersteaks.com and a different URL, www.steaksareus.com, that leads to the same page. Our goal is keep the Open Directory as spam-free as possible, and editors' alertness to spam is crucial to achieving that goal.
Sites that repeatedly or persistently spam the directory will be blocked from submission, and their sites may be removed from the directory. Sites affiliated with known spammers may also be removed from the directory and/or blocked from submission. If you notice repeat spam in your category, you may write to the submitter explaining our policies. You may also direct them to our submission guidelines to clarify any confusion. If you choose to write the submitter, be sure that you are polite and courteous in your mail. Profanity and vulgar language in email to submitters is inappropriate, as are threats. Please be sure you make it clear in your communication that you are not a representative of DMOZ staff. If you are uncomfortable in writing perceived spammers, email staff at staff@dmoz.org with the following subject line - "ODP Spam" - and staff will take care of it.
In some cases, sites will be deep-linked. In these cases, the deep links should offer content that is extremely useful to a particular category, or the content should be particularly unique. Deeplinking should be the exception rather than the rule.