Web directory submissions are not as hot as they used to be. Major search engines like google, yahoo, bing have discounted the importance of web directories and links from them are not as important as they used to be. Earlier it was one of the most important parts of SEO to submit your new website or blog to a web directory list of hundreds and thousands of web directories. Now, only the big directories like dmoz or yahoo directory are considered very important. Still, its advisable to do submissions in some web directories. It can give a good start to new websites and blogs and directory submissions are still somewhat important although not as much as they used to be. An important point to keep always in mind while doing SEO for a website is to build links naturally. Your link building efforts should look natural to search engines which includes getting a variety of links to your website. If you get only blogroll links or only post links, it will not look natural, but artificial to search engines. Doing directory submission bring a new variety of inbound links to your website and appear more natural. For web directory submissions, try to find high quality web directories related to the niche of your blog or website. Submitting to niche web directories will be good for SEO and can give boost to search engine rankings. Also its advisable to keep away from web directories who either ask for money or reciprocal links. Paying few dollars can be considered if the web directory is really high quality.