Personally, I like spoilers, but if folks are going to post spoilers of things that haven’t happened yet (on the show or in the books) they should use spoiler warnings and post the spoilers using font color = white.
Once it’s happened on TV, then it’s no longer a spoiler. This is a live discussion thread, after all. ;)
Shireen ain't dead in the books, and the three chapters they posted on Martin's Not A Blog (Sansa Stark, Arya Stark, and Arianne Martell) didn't deal with her.