I got 53% correct.
MOD NOTE: For those who missed Marley’s note at the end of the thread: picunurse was not the OP. The first post in this thread was from a spammer, and it was removed. Sorry for the confusion.
Is 50% bad?
too bad we couldn’t see the original next to the photoshopped after taking the quiz. That would have been cool.
I’ve got 47%, mostly by accident I’m thinking, so I suppose that tells us on average reality is just as strange as fiction and vice versa.
63%. I think I will print out the answers and compare them to see which ones I got wrong.
60%. Harder than I thought. I totally missed the wienermobile, or I would have had one more right.
57 % right. Not much better then chance, and I actually cheated a bit because I knew a few of those pictures from other sites. Like this one at cracked:
Images you won’t believe aren’t photoshopped.
I got the wiener mobile one, because my husband is in the picture! He drives the big, slime lime thing in the foreground.
60% - I didn’t really look at the pics, but if it looked as if it could be used as a marketing pic, I chose “shopped”.
I didn’t really try and got 73% (22/30) using the “truth is stranger than fiction” principle. 
Same as Mindfield, 73 %.
I got exactly the same result, using (I think) the same principle. If the photo looked fairly ordinary I assumed it was faked, and if it looked fantastic or impossible I assumed it was real.
Roddy
67%…2 outta 3 ain’t bad.
I got 63% (19 out of 30 correct) by choosing “Photoshopped” for every image that looked natural to me.
73% If Photoshop is used in the right way at the right time, you shouldn’t be able to tell. If someone takes out a car in the background of a picture, the focal item in the picture may remain untouched, but the image is still “shopped”. People are scary good with PS these days.
I got 63% but I didn’t really examine the pictures in detail. I just used psychology to try to figure out what the quiz wanted me to answer and then re-think it.
63%. I think I would have done better if I could have blown some of them up more than they allowed.
Huh, looks like I have the high score so far: 80%! 
Honestly, though, I think it was mostly luck. Most of the photos were so tiny it would be difficult to actually identify anything but the most obvious fakes (which a few of them admittedly were). On a lot of the questions I basically guessed.
Hmmm…I would have done better if they hadn’t conflated “rendered” with “Photoshopped”.
60%
But some of their “Professional photographs” I’m willing to bet were enhanced in Photoshop.
I got 63%, and part of it was that I had already seen a few of the pictures either debunked or confirmed on Snopes, or shown as examples of the capabilities of good Photoshop artists.