Dmoz is the Internet’s largest directory system (over 4 million
web sites) and is maintained by human editors. A web site listing
in Dmoz can also be an important part of having a web site rank
well in Google, because Google uses Dmoz results in it’s own directory.
Advantages of Dmoz :
Better relevancy than non-human edited directories and search
engines.
Do not rank, promote or optimize sites, simply a data provider.
Disadvantages
Abuse by editors (not often)
Can take a long time to have your site reviewed
Bookmarks