OK, here's what I've created. Someone please let me know if I'm misunderstanding how this works.
I'm including visits for which Source includes google OR search.yahoo OR bing OR duckduckgo OR blekko.com AND New Visits is greater than 0 (I'm not really sure about that, but there doesn't seem to be a way to tell it to look for visits where New Visits is True).
This may not be working. I'm looking at UVs for a one-month period, using both the Non-paid Search Traffic default segment and my new "New Organic Visits" segment, and the new organic visit count is slightly higher than the non-paid search traffic. That doesn't make sense to me. I would think that if I did this correctly, new organic visits would be a subset of unique non-paid search traffic.
That's the case when I look at total visits in the two segments: new organic visits is about a third of the non-paid search traffic. And for what it's worth, the numbers for the new segment are almost identical for both visits and unique visitors. They're off by only .4%, and that does make sense to me.
Edited by qwerty, 06 March 2013 - 12:15 PM.