Protecting your brand name is important, and you can do this by registering other versions of your domain name, even common typos of it. Doing this will also help drive more traffic towards your website over time.
Choose an intuitive .LOL domain name
If a random person could read your .LOL domain name and immediately figure out what your company does, that is ideal! This will prevent a lot of confusion and make sure people know just how you can help them with your business or website.