How can entrepreneurs build their personal brands?

Even though I have been an entrepreneur for several years, I am not active in the "community". I don't use Twitter or Facebook. How do you guys build your own personal brand? Is it helpful in your business? Does it make hiring people easier, etc.

I think it depends on the type of business you are running and your own personal goals and skills. When I worked in a large company and was a hiring manager my social networks were a potential hiring channel, so I focused on that one angle. My first business was a niche that I wasn't an expert in, so I didn't see any immediate value in building up a personal brand. Now that I am thinking of new and bigger startup ideas I see a value in building up an online identity that could help me promote my next business, build relationships, and maybe find future partners, mentors, co-founders, etc.

Blogging for the sake of blogging is not worth it. If you are a good writer and can produce either informative or entertaining blog posts, that is fantastic, but I wouldn't force it.

TLDR: Depends on your goals and skills.

I think you more or less answered your own question.

I'd encourage you to think about the "why" of your question. Why do you think you want to build a personal brand. From there, you can better figure out the "how".

edit: @Webbie's answer reminded me to add: Companies don't do business with companies. *People* do business with *people* - that's why having some level of personal brand is wise. Whether that's just a LinkedIn profile, or more, is your choice.