I understand the the "fingers-in-a-v" thing is common
in all sorts of japanese photos, but what does it
actually mean/signify? Is there a name for it?

This is known as "The Peace Sign" and is similar to "thums-up" or the o-shape-for-OK or a wave

*poke* *poke*

I realize that, but I thought there was more to it
than just "the peace sign". If guess that's all that
it means, I'm a moron. That is all, you guys may return
to your regularly scheduled programming.

Yah, I dunno what it is or why it's so popular over there, but in Korea they did the same thing, but not in Thailand, though we didn't see many youthful people in thailand in a non-business setting.

I could be wrong, it could mean "Your mother spreads her legs." but I feel fairly confident.

Somewhere in there my attempt at being humorous failed.

日本語でもいいかしら？
今回はホームページをつくってくれてホントにありがとね。
私はぜんぜんこういうことがわからないので、とっても
助かります。はい。
これからもよろしくね。
では日曜日に１時に家で会いましょう！
まふみ