Sometimes the power of blogging can be difficult to comprehend, especially since millions of people do it daily and only a select few are making a sizable income from it.

The best way to explain how crucial blogging can be to your bottom line is to show you three experts who have built their name (and acquired thousands of customers) through blogging.

Note: These people run businesses outside of blogging alone, but have managed to garner attention and make millions from their blogs.

Brian Clark is better known as Copyblogger. He manages a copywriting blog, which he uses to promote WordPress solutions that his company has developed. He has over 170,000 email subscribers, 12,000 Facebook fans and 110,000 Twitter followers. Not to mention that he is one of the biggest names in blogging and copywriting.

Brian's Blogging Tip: Great content spreads. Brian frequently writes on social media topics, encouraging bloggers to tap into relationships and networking.

Timothy Sykes was a typical day trader until he started using his blog as a way to share tips with other traders. He created an email list, search engine optimized his blog and completely revamped his website. He went from earning $50,000/month to over $150,000/month from his blog.

Timothy's Blogging Tip: Be consistent in your blogging habits. Despite his busy schedule, Timothy blogs daily to ensure he is consistently providing value.

Erica Douglass is perhaps best known for selling her online web hosting company for $1.1 million at the young age of 26. Now retired from her traditional job, she uses her blog to teach others how to become successful online. With over 30,000 monthly readers and 16,000 email subscribers, Erica is using blogging to extend her online success even further.

Erica's Blogging Tip: Be genuine and seek success for others. Erica frequently writes on the mistakes she has made, providing real value to empower her readers.

Neil Patel is the Co-Founder of Crazy Egg and KISSmetrics. He also operates Quick Sprout, his personal online marketing blog, which he uses to promote his companies and a traffic system course. In a recent interview, he revealed that he earns over $1 million in revenue from his blog each year.

Neil's Blogging Tip: Get to know your readers. Neil tries to respond to every comment that his blog posts receive.