What does salvage title do?

I was just wondering whats wrong when a car has a salvage title? I see alot of ppl hesitant to buy a car that is in good shape but has a salvage title. Can someone pls explain to me, I'm a bit confused about it.

It basically means that the car was severely damaged and (probably) totaled by an insurance company. Someone spent some money making the car look fine, but their is no telling what things they covered over with only cosmetic fixes.

Oh ok now I get it, thx. :)