Hello. Acquiring fine matching domain names is good ...but you still need to look fancy on social medias like LinkedIn , Instagram and Twitter . Having a perfect username matching to your business is great also and easy to avoid scammers and protect your consumers. When you go to twitter.com/business you will reach the Bloomberg page. But business.com the domain is a property of BuyerZone.com, LLC , Centerfield Media Holdings, LLC . .they have the Twitter username twitter.com/businessdotcom how sad. But you can claim a username in social media by submitting your brand identity and Trademark details. Sometimes it's not possible because of someone registered it before you.you cannot win a battle there.You have to satisfy yourself with a long unmatched username. If you have anything related to any social media username stories let me know in comments.