b'LLC, is not going to be sufficient. If you do encroach on someones brand, they are likely to send you a cease and desist letter. If theyre already established and youre not, they win. Just avoid the fight.Then check with the secretary of state where you plan to form your company to see if the name is available. The secretary of state generally wont let you form a company if the first two words are the same as an existing company.If the internet search is clear, grab the domain. I also buy domains to keep people from encroaching on my space, I dont worry so much about the .net, .co and other suffix domains, but if someone else could use my domain just by making a word plural or using a different tense, I buy that domain too. You can point other domains you own to yours. I usually buy domains for just 1 year to start (but set up auto-renew). If Im not still using it in year, I can decide then whether to keep it.The name should be easy to pronounce and easy to spell. Avoid complicated Latin terms.The best brands use words that mean something to you, so if someone asks why you chose that name you have a good story behind itone that you shouldnt be embarrassed to tell.224'