Focus on the top directory sites instead of using some of the directory-listing services that claim to submit to hundreds of websites. These are typically low-quality spammy sites that do not provide any real SEO benefit. It is so important that your business, address, and phone number (NAP) is listed the same on the contact page of the website, the places pages, and all of the directory listings. The search engines take these citations into consideration when determining the authority of a local listing, so make sure to put the extra effort in making sure that your NAP is consistent across the board.
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