Someone pointed me to this demo.
I uploaded some photos from my phone, and it knew what each of them was:
..well, except the black volkswagen beetle, which was my rental car in Maine — it thought it was a limo.. but that's pretty close.
Then I uploaded a picture I found of a bug:
..I would have been impressed if it said "bug", but it said Damselfly, with Dragonfly as it's second choice. I thought it was a dragonfly, and was already impressed, but when I looked up damselfly I discovered it was right. It recognized what was in the image better than me.
So that's where we're at. Apparently computers are pretty good at knowing what pictures are of..