Linked from
The 10 pages that link to Poynting–Robertson effect, each with the reason it gives.
Zodiacal lightRelated: It draws dust inward, helping shape the cloud that produces the light.
Debris diskRelated: It can draw small grains inward faster than collisions replenish them.
Rings of JupiterRelated: It removes ring dust over time, requiring continued replenishment.
GegenscheinRelated: It helps determine how dust is transported through the inner Solar System.
Interplanetary dust cloudRelated: It draws many grains inward toward the Sun.