[1] Adeney retired from his job as a software engineer in 2005 at age 30 by spending only a small percentage of his annual salary and consistently investing the remainder, primarily in stock market index funds.

[8] The primary aspect of the blog which has caught the attention of many media outlets is Pete Adeney's extremely early retirement at age 30.

"[13][14] Many of the forum's discussions are focused on topics unique to this niche community, such as frugal living, investing large sums of money, and retiring early.

Readers of the blog gather in person regularly at meetups around the world to share experiences and tips on how to live a lifestyle conducive to wealth building, early retirement, happiness, and environmentalism.

[1][15] In 2017, Adeney introduced "The MMM World Headquarters Building," a physical location in Longmont, Colorado, dedicated to the Mustachian movement.