Actually. My example still follows the same principles.
Create a set of nodes. ID them for a follower. Then move the platform node to node. Even if your not drawing them, but instead creating them during edit time.
I would however add a criteria of naming the platform and path so that platforms stick to there path nodes.
You could use the idea of following a vector line, but it's over kill for a Mario like platform game.
You can also give the nodes instructions.
Forward. move the platform in a count up ward path.
Back. Send the platform on a backward count down path.
drop. have the platform fall off the screen.