Huh? Why would they be revised?

Being new around here, I am still getting familiar with the moderation of spoilers.  My earlier comment was WRT the bolded, itallicized part of this quote from the post defining what is needed spoilerwise for changes.  

Just fyi...when it starts hitting the shelves, spoilers will fly faster than some people can get their hands on it (or, in some cases, faster than others will read).

To that end, I ask these things:
1) Keep actual spoilers out of the titles. These titles can be seen from the main board, sometimes, and sometimes folks hit the spoiler boards regarding past books.
2) Put CHANGES SPOILER in the title somewhere for a few weeks*, so people who haven't been able to get their hands on it as fast as you won't stumble across a spoiler by accident, perusing here for speculation or talk about older books.
3) Spoilers revealed in online reviews are still spoilers, and must be hidden under the spoiler tag.

...

NOTE: It doesn't matter how minor the spoiler is...we're not going there. Period.

The point being, it's been a little more than a few weeks, and being new around here I'm not sure where the lines are and didn't want to get clubbed over the head for crossing one unawares.

I don't like that my email address seems to be showing on my profile (at least when I look at it).  I want to get it off of there but I can't find any setting that allows me to do that.  Anyone able to help me?

Edit:  I just logged out and looked at my profile, and under email address, it says "hidden" is this the case for all users, or just people lurking without logging in?