Decrement Increment Random Include first two characters (might result in invalid URLs)
Refresh Rate: s
The Random option randomizes the characters after the initial "mo" in the link. You can manually change the "mo" and it will generate new links with those initial characters, but they aren't guaranteed to be valid URLs. Travel to the future or the past. You can click the checkbox if you want all the parameters randomized.
You can switch between incremental and random modes on the fly without stopping and restarting.
If you don't get the automation stopped in time to catch that perfect pic, the picture tab/window maintains its history, just stop the process and click Back to get to what you were looking for. New clicks of Start always generate a new tab/window. Closing the tab/window stops the process.
This is an amusing side deversion currently in progress, suggestions are welcome. Cotli room 3.