This goes out to both smart and silly people alike -- you truly need to get over the whole SPOILERS thing when it comes to a television show that's ALREADY AIRED. The whole concept of SPOILERS were meant to be when people find out stuff BEFOREHAND, as in BEFORE the show has been broadcast on TV.
Once the program has aired -- if you chose to "DVR" it to watch the next day or whenever, then THE RESPONSIBILITY FALLS ON YOU to avoid news sources and especially social media sites like Facebook and Twitter.
When the majority of viewers watch something the night it's on TV, especially a program that was highly anticipated (such as the most recent GAME OF THRONES episode, which had been talked about online for weeks ahead of time -- and amazingly SPOILER-FREE at that), expecting those folks to all adhere to an unwritten and unspoken pact to be silent because a few others were busy that night -- well, no offense, but that's really tough turkey titties for you.
Take it from someone who's been spoiled on things far more times than he cares to recall: by and large, it's almost always your own damn fault.
Times have changed, and if old fucks like me who were able to watch TV cliffhangers unfold or be resolved before Al Gore ever invented the Internet (spoiler time -- he didn't) -- if I'M able to acclimate to the way technology has changed things, then there's really no excuse whatsoever for people that are 2/3rds or even closer to only half my age to complain. This is the world you've been brought up in. You don't even have to "get with the times" -- you're part of them.
Note: this doesn't apply to movies, as there should be a longer "grace period" than the opening weekend. Now just how long that should be, I'm not sure. I didn't see that mentioned in the invisible pact either.
All that said, it IS a kind of a dick move to post something that's clearly a SPOILER in your Facebook Status Update. Save it for the comments that follow. One should avoid plot detail in the "Headline", but then say whatever heck you please in the "story". I don't mean to undercut my own blog, but taking the devil's advocate point of view -- doing otherwise (from what I just described) seems a bit deliberately willful and petty.
So your update can simply read: "I can't get over what happened on Sport of Kings tonight".
And your subsequent posts under it can then say: "It was bad enough Lord Dinglebottom was banging that horse, but I never expected him to get a hoof straight to the gunnysack and end the episode as Lady Dickbegone."