Your listing is added immediately. Webquests is an easy to use directory with 15 main categories and dozens of subs. Users have an opportunity to comment on and rate sites. What's New is the comprehensive listing of current travel, entertainment news and tickets. Where2Go calls themselves the Internet's most sophisticated business search engine.
Listings are free but they do appreciate a reciprocal link.
Yahoo is the biggest and most well known directory. Read their submit section and choose your categories carefully as it can take up to six weeks to be included in their directory. All types of sites are listed and submission is free. Your site must be reviewed by a real person.