Every online business needs traffic, which comes with increased visibility on the web. One great way to get noticed is to get listed in the major directories. Links from good directories increases your site's visibility many fold. There are thousands of web directories on the net and selecting the good ones to submit your site can be a time consuming task. Also there are free directories and paid directories. You need to submit to both types of directories.

Check the robots.txt file. Make sure that search engine bots are allowed to crawl the pages where you intend to put your listing. Check the Meta tags to make sure that search engine spiders are not prevented from following links in it. A Meta tag with noindex/nofollow will not be indexed or spidered and links in that page are not followed by bots.Check if the directory is being maintained regularly. Visit the directory from time to time to see if errors are getting corrected, site information is getting updated and the like. In short, look for positive activity on the directory.