I've pulled off links spike only a few times. It just seems like such an unpractical spike when you consider the ledge grab invinsibility frames that characters have. It seems predictible as well. I never do it, but I think its pretty obvious when i am slowly creeping to the edge so I can correctly pull off the tilt instead of a running tilt or smash, and by then my oponents are always already rolling or jumping off the ledge (with invis frames). Even if I could get it off it seems like i'm swinging into invinsibility frames EVERY time. How can you effectively and consistantly position yourself for this spike?