The Group of Bloggers Unearthing MH17 Intel Quicker Than U.S. Spies
http://mashable.com/2014/07/23/citizen-journalists-mh17-spies/
Higgins, with the help of some of his Twitter followers, was able to pinpoint the location of a Buk launcher while it was being transported through Snizhne, a pro-Russian rebel-held town in Ukraine near the Russian border, based on a video circulating on YouTube.
The next day, Aric Toler, a longtime follower of Higgins, identified the exact location of a photograph of the Buk launcher in Torez, another town in Eastern Ukraine, using only open source information like the name of a store shown in the picture, and other unrelated YouTube videos filmed in the area.
Toler and Higgins were able to establish that the photograph was shot around 11:40 a.m. local time, using an online tool called Suncalc, which lets you calculate the position of the sun based of the time of day and location. That would prove that the launcher was in the area before the MH17 crash. (Higgins told Mashable that he checked the tool's accuracy by taking pictures of his garden at different times of the day to see if the shadows matched the ones on the site.)
Fascinating stuff.