If you are referring to entering those words in the searchbox, yes I should've put in some warnings/checks there to enter a valid image URL. Will fix it soon. And yes I should make the site secure too. Thanks for letting me know.

PS: You can explore company logos here http://compute.vision/brands/index.html . It's implemented using an older iteration of the algorithm and performance isn't that great compared to the one used with the icons database.