Sometimes I also use this as a code diff tool. But it's most fun for those image puzzles.

Speaking of trivializing a challenge:

There's a challenge where you see words like "RED BLUE YELLOW GREEN PURPLE", but they are written in color different to their name. You are challenged to say the color of the text and not read the word out loud.

Intentionally defocusing your eyes makes that challenge trivial.

Now I’m one of the happy 10000!

For people who may not understand your comment: https://xkcd.com/1053/

I'm also one of them... actually not, I'm not "in US" :)