One thing I can immediately see this being useful for is guessing a companies logo:

http://mebe.co/macdonalds_logo.jpg http://mebe.co/curtin_uni_logo.jpg http://mebe.co/guzman_gomez_logo.jpg http://mebe.co/target_logo.jpg http://mebe.co/microsoft_logo.jpg http://mebe.co/apple_logo.jpg http://mebe.co/flowdock_logo.jpg http://mebe.co/guildford_grammar_logo.jpg http://mebe.co/sunglass_hut_logo.jpg http://mebe.co/trello_logo.jpg http://mebe.co/android_logo.jpg

That would be a pretty sweet thing to add to your signup forms.