IMO everybody should know for themselves what makes a MFK. But, we are all on this page for a reason, aren't we? It's not a coincidence that we are called Monster Fish Keepers, not Casual Fish Keepers
Do you change more than 10% of your water every month? Do you not believe the pet store guy who tells kids that baby oscar or red texas will be fine in a 20gal? Do you care enough about your aquatic friends that you turn to a hobbyist forum such as this page to get your questions answered?