>>705
If I were to make something similar, I'd just make dictionaries for each mood, like the word cute is young and casual, whereas the word hitherto is polite and more "mature". Sort of like that website analyzer that claims that DQN is written by a girl.
Effort would be measured by length, mood, how many long words are contained within the post, the number of replies and lenght of said replies.
I don't think the emblem should match the post all the time, and the algorithm getting it wrong sometimes would be part of the fun.
Of course, on my website, the emblems would automatically personalize your anime avatar associated to all your posts.

The name of my website? geaonline.moe