Six forums that I use have Gravatar as an option and about 2-3 of them are Gravatar only.
Also Dumuzid's gravatar is a reference to Mr. Bone's Wild ride; a ride and creepypasta based on Rollercoaster Tycoon 2.
Fucked up ending? More like it ruined the whole book. I was fine with the book for the longest time but then that ending THAT ENDING made me think more about what could happen but instead it didn't because it frustrated me way too much.
You can see the butt skin in Astro's gif does that mean it's the most lewd signature on the forums? It wouldn't fit the description of "... IT'S NOT LEWD IT'S JUST A BUTT FULLY CLOTHED" [Emlee, Pg. 164].