Long-term investing can be a vague term. It can mean a financial goal beyond five years, like buying a home, sending your kids to college, or starting your own business. Or it can mean investing for a goal 10, 20, even 30 years in the future, such as your retirement.
The focus of this site is the long-term goal of retirement. Your long-term strategy not only has to work up to the day you retire, it should also continue to generate income throughout your retirement. So, if you've got 30 years before you retire, and you expect to live another 30 years after you retire, you're looking at creating and maintaining a 60-year investment strategy! And, if you want to leave anything behind for your heirs, it's even more than 60 years. Now that's long term.