That's pretty much the distinction I'd make as well, although I usually phrase it another way: for is for generic iteration, map is specifically a transformation.

A surefire way to annoy me and lose points when we get sample code is people who for whatever reason use map in void context rather than a proper for loop (it doesn't say "LOOK I R IDIOMATIC CODERZ", it says "ITERATION: UR DOIN IT WRONG" (and yes, I do have a lolcat based scale for applicants :)).

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re^2: map versus for by Fletch
in thread map versus for by dHarry

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