Wi-fi feedback just helps let others on here know that you're trustworthy, and they're more likely to let you visit their town.
Some people could be rude and steal hybrid flowers or cut down all of their trees (something like that). So, people are a bit wary of letting others visit their town. I don't really know how you could leave feedback for me, because it hasn't been letting people leave me wi-fi feedback, for some reason. All in all, enjoy Wolfgang. I must bid thee adieu