Web directories have various types of listings and dependent upon the price paid for inclusion.

• Free Submission – there is no charge for the review and listing of the site.
• Reciprocal Link – a link back to the directory must be added somewhere on the submitted site in order to get listed in the directory.
• Paid Submissions – a one-time or recurring fee is charged for reviewing/listing the submitted link.
• No Follow – there is a rel=”nofollow” attribute associated with the link, meaning search engines will not follow the link.
• Featured Listing – the link is given a premium position in a category (or multiple categories) or other sections of the directory, such as the homepage.
• Bid for Position – where sites are ordered based on bids.
• Affiliate links – where the directory earns commission for referred customers from the listed websites

The advantages of linking your websites/blogs to web directory are; firstly, your sites will get huge traffics either instantly or slowly boost up. Secondly, your websites/blogs ranking and popularity level will increase. Thirdly, you websites/blogs are exposed to many web crawlers and popular search engines.