Directories are used by the webmasters to obtain backlinks for their websites. There are two types of directories including free and paid listing. Free directory listing options is offered by almost every directories. There is a selective directories that offer paid listing.

When submitting to directories, make sure you check its IP address. You should avoid submitting to directories that use same IP address. Directories with the same IP address are hosted on one server. If you submit to directories with the same IP address, the search engine will penalize you. If you submit to too many directories with same IP address, the search engine will blacklist the site so that it won’t appear in the search result. The search engine will derank your site. After the site is derank, it will be very difficult to get in indexed again because it is already included in the black list. You can recognize directories with same IP by looking at the template it used. If the directories use the same template, there is a high possibility that they belong to the same owner. To avoid submitting to these directories, you can use an online IP address checker to check their IP address.

It is not necessary to submit to all the directories on the internet. You only need to submit to the top directories. You can find a list of top directories by entering the keyword "top directories" in the search box of the search engine. Most directories that are included in the top directories have page rank 4 and above. Submitting your site to directories with page rank will increase your ranking position on the internet. If the directory don’t have page rank, it is best that you don’t submit to it. Submitting your site to a directory without page rank will not help to increase your ranking on the search engine.

If your site is new, you should spread the submission process to a few months. If your site is older than 1 year, you can submit more directories in a shorter time.

If you are lack of time, you can hire a SEO company to perform the directory submission. The SEO company offers directory submission at an affordable price. Before submitting to directories, make sure you perform pricing comparison. By performing price comparison, you will know which SEO company offers the cheapest directory submission. The SEO company is able to submit your site to the directories that are optimized for the search engine. When hiring a SEO company, make sure you check its reputation. You can determine the reputation of the SEO company by checking how many years it has been in the industry. The SEO company should be in the industry for at least 1 year. You can ask the SEO company to show their portfolio. You can browse the portfolio to see if the SEO company is qualified to do the job. You can find reviews on the SEO company by performing a search in the search engine.