In particular, if a moving pylon (or, heaven forfend, the shield arc of a high-tech station) happens to move into you, you don't bounce off like you would with a normal ship - you end up taking several ticks of collision damage, with often excessive results.
Why, you ask, was I close enough to notice this? Well, I had (past tense), an Omen class frigate, and was happily EMP-ing an adjacent section of station, when a slightly incautious maneuver ran me into the station... and the omen just vanished. I had shields up, I was at essentially zero flux... and the Omen just died instantly, not even leaving behind any wreckage.
I suspect that this is a bug with the station's immobility - with normal ship to ship collisions, both ships move, and even a sudden shield overlap gets resolved very quickly. The station, however, doesn't move, and I'd guess that a ship that collides with it is still using calculations that assume the thing it's bouncing off of is also being repelled by the collision. Posting this in suggestions instead of bug reports, though, because I'm not actually -sure- if it's a bug, and there's probably some room to discuss whether anyone else has seen similar results.