Chill out Master, it's not like he made you eat your parents.
To be fair, people often use spoiler tags when discussing the previous episode, for those who haven't gotten round to watching it yet (which I'm certainly grateful for, we get the episodes a day later here). If I'm up to date, I generally read everything unless there's a warning.
You can add clarification of what a spoiler is by using spoiler=blahblah as the tag.
Blah and also blah
...For example.