Yes, it looks good - it's just a pity that the unprovenanced sites aren't added, so that anybody using this method to locate them remains in the dark. And that 'not accepted as prehistoric' category is so arbitary. I can identify froth (eg http://www.themodernantiquarian.com/site/3667 ) - and also major sites that are excluded from Google-up Earth (eg http://www.themodernantiquarian.com/site/7448 ). This last one shows very well at maximum zoom - as an elongated Z angled NW-SE.

Anyone waiting for this person to write an article about the 'missing ones', for Antiquity or similar, should enter a state of suspended animation - for quite a long time ...