Originally Posted by
javabytes
Yes, especially if you have flights in premium cabins or the higher coach fare classes, and even more so if you are not based in a hub city.
This. Points rack up much faster if you're in a non-hub city. Just remember that points do expire, and try not to go to too many "vacation" destinations
It may not give you much, but it is free, and points rack up automatically if you just put your SkyBonus number in your DL SkyMiles profile.