I just thought I ought to clarify a point about the pinenuts, since it occurs to me that many people -- as I do -- freeze whole pinenuts to preserve their freshness. They do keep better that way, but when they're crushed up as in pesto, they deteriorate faster and lose crunch (I often make a kind of chunky pesto).
I find I have the best results with pinenuts (and other types of nuts) if I freeze them whole and raw and then toast them just before using.
SGFoxe, yes, blanching is going to dilute the flavor. The darkening of unblanched basil doesn't seem to affect the flavor, so it's a matter of aesthetics: color vs. flavor.
By the way, I came across a reference for preserving basil in salt that says if you leave the leaves whole and layer them in the salt so that they don't touch each other, and then refrigerate the whole business, the leaves stay close to fresh. I haven't tried that.