Once you establish an identity of your enterprise, it gets sucked up in to numerous directories, portal sites eager to jack eyeballs from you and perhaps sell the info. to other directories. SO BE METHODICAL AND CAREFUL IN STATING YOUR N.A.P. (Even with things like city business registration).I would avoid YEXT, which promises to make your NAP uniform across the web.
search carefully before establishing any new accounts to make sure they haven't already set one up (without your knowledge or permission). Because if you create a duplicate, say 'Google Places for Business' or 'Manta' account, then the process of changing or deleting the other one can be difficult or impossible.
So once you select the big 3 or 4 pertaining to your business, e.g. Google Mybusiness, Bing Places for Business, Yelp, Tripadvisor, and others such as Angie's list, or Houzz, depending on your niche. Your next mission (if your business is established on the web) is to search your name and select and claim additional local search directory sites like YP.com, Manta. That way if people are going to click them, they at least have your custom pictures, description, and correct link to your website.
