Despite being ruled "Off Topic" I will try again.
And, this is as "On topic" as the post I'm responding to!
"OP" does NOT mean "OPeration page".
The explanation above is incorrect.
I suggest checking out this:
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Of course my first thought was Original Poster or Original Post. I rejected Original poster because that is not central to the operation of the page. I have been considering it to mean Original Post, but unlike online chat, that first post is not static. It changes with the version, it changes with what extras are now available. It seemed to work differently than it usually does.
Many initializations/acronyms are shared with vary different meanings in a different environment. If a friend were to tell you they really like CBT, what would you think?
Cognitive Behavioral Therapy?
Computer Based Training?
Computer Based Testing?
Cock & Ball Torture?
Context matters. At one time, "gay" only meant happy and carefree. "Sick" meant someone was ill. OP can also mean Over Powered--that one surprised me. I'm used to people saying, "That character is OP," but when I heard "That character is broken," I thought it was wasn't working, not that it was so powerful it broke the balance of power.
Personally, I have no problem accepting that an initialization can mean one thing in general, but something different in a specific community. Perhaps it didn't begin that way, but nomenclature can change over time. I think Operations Page describes the function of the initial post quite well. Just MHO.
EDIT: With a handle like "Grog," I couldn't help but think, "Grog just a simple caveman. Grog frightened by too many glowy white letters on the screen."