http://www.onlinebizdir.com/ This is a 100% free directory and you can submit your site right now. The process takes less than 1 minute and it will help build your back links. Submit as many sites as you wish. All you need to do is browse to the right category and then "Suggest Listing"! When you submit your website you can ignore these fields: Place your bid, Zip Code, Country, State, City, Address. Those fields are optional and avoiding it will also help you submit your sites quicker. http://www.onlinebizdir.com/
I go to health>addiction category, and click suggest listing, why I can't see the category in the submission form?
It's showing that you are submitting to that category in 2 differen't ways. Up at top and right above the radio buttons for choosing which submission you would like " Addictions (change) ".
UPDATE! We just added a new category with many sub-categories for Real Estate. It has many categories so that your real estate website will be placed just right for people to find it!