According to Verisign, the registry handling .com domains, this TLD accounts for nearly a third of the more than 335 million domains (and growing) registered today. Registrations for the two most common domains, .com and .net, alone will gain millions of new registrations each year. With .com touching nearly everything imaginable online, it’s a good idea to protect your brand.
Even if you go with another TLD, registering .com domains with common misspellings of your website address will keep others from misdirecting your traffic to their sites. Best of all, you don’t need to have a separate site for each domain — you can just have them redirect visitors to your primary .com site.