It often screws over the residents who worked hard to make an area desirable. A typical pattern goes like this: 1. An area is cheap because it is considered u

It often screws over the residents who worked hard to make an area desirable. A typical pattern goes like this: 1. An area is cheap because it is considered undesirable and all the rich folk move away. 2. Poor folks move there - artists, minorities, families. 3. These folk work for years to make the area safer, nicer to live in, more interesting. 4. Now that poor folk have improved the neighborhood, rich folk flood back in and buy up property or just drive up rents, pricing the original residents out. 5. Lower class folk forced to move to the next crappy neighborhood, and repeat the process.