Bug#878373: xscreensaver-screensaver-webcollage: Fails to get resuls from google, bing, and instagram making collages repetitive.

[Jamie Zawinski]

Here's an idea, try running a version of xscreensaver that is not over a year 
old.

Yes, you have made the mistake of using Debian. I realize that they go out of 
their way to make that difficult for you. My sympathies.