I doubt you spoiled it for anyone, but it makes no sense to me why you would put spoiler in the title, then put the actual spoiler right after it.
ok, let me expain. what happened was, in the beginning, i had the title "I just found all 40 G&G cards. Congratulate me on my new stupid outfit!!!" then i decided that some people might call that a spoiler so i said ok, ill put the last part about the outfit in the actual message and a spoiler warning in the title. so i copied and pasted the "congratulate me on my new stupid outfit" part into the message, put in a spoiler warning, and then hit "post". Only problem is, i forgot to delete that last part of text out of the title since i had copied it to the message out of the title, but i never actually deleted it out of the titel. ooops.