How many domains does your company utilize in your business ?
The larger companies have acquired anywhere from 100 to thousands for their brands. Yes that many because they cover many areas. The larger companies will add typo domains, similar, related, misspellings and plural versions to give you an example.
As a small business you should also incorporate this same strategy on a smaller level.
If you own say a kids clothing store called Little Threads and you are in Sacramento, CA. You could also own KidsLittleThreads.com, LittleThredz.com, SacKidsClothes.com, SacramentoKids.com, LittleThreads.net and maybe a few more depending on your exact location and other variances.
This strategy is to protect your business and also add value and traffic from these types of domain names. Never be shortsighted in acquiring these types of names as the internet traffic will bring more customers to your door.