Line length in poetry

[milo]

I suppose tetrameter is quick and bouncy, light. But we were talking about free-verse, where the movement is much more difficult to control.

I was going to segregate according to that but I am not a big believer in "free verse means I get to pretend meter doesn't exist". Good free verse acknowledges meter and still uses it for effect but also uses the variation of meter as an additional tool. That being said, I figure the overall effects are the same, just more open to the control of the writer.