Why doesn't the kitten example in the Chrome extension development tutorial load any images?

Question

In the Getting Started page, we\'re promised kittenish goodness from Flickr. Putting the extension together according to the instructions, no kittenish goodness materializes. In

Answer 1

8/1/2014 - The code on line has indeed been fixed, but this tutorial still wouldn't work for me until I pasted my own API key.

HOWEVER

Make sure you don't remove the trailing ampersand (the &) at the end of the pasted api key. The ampersand needs to be there or your code still won't work!