If you have version 1.2.6 or less, you may need to uninstall and then reinstall the script for the changes to take affect.

Updates (for 1.7.0, 1.7.1 and 1.7.2):

• Made jump to non-spam threads link. These will be disabled when the spam threads are deleted.
  
• Threads are, by default hidden by spammers (subject to when I find them).
  
• Turns blanked-out names to [blank name] so that player's name becomes visible and then hides threads and replies by that player.
  

To update to this new version instantly:
1) Go to your add-ons page (e.g. for Firefox, it's about:addons).
2) Click on Greasymonkey / Tampermonkey / Violent Monkey.
3) Click on settings button at the top of the page and select check for updates.

Edited 1/8/2017 00:14:24

Update: made invisible subjects become visible.

Works great for me, keep up the good work Dan!

Here's a sneak preview of a UI that I'm making:
https://s25.postimg.org/5aq7zrw8f/Hide_Threads_and_Replies_by_Poster_preview_UI_bo.jpg
https://s25.postimg.org/otzemvkdr/Hide_Threads_and_Replies_by_Poster_preview_UI_to.jpg
Just need to tell the buttons what to do :)
If you think it could be improved, let me know how you'd improve it...

Updates:

• Added UI (doesn't remember player names and threads exceptions after you close/reload the page).
  
• You can now deicide if Map of the Week threads can be hidden or not by not going into the code! Instead, you can follow these steps:
  Click on the ▼ in the top right bar that displays your name, level, coins etc.
  Click on Dan's Userscript.
  Press OK.
  Press OK to change your MOTW preference, cancel to not change it.
  Type yes to hide MOTW threads; no to no longer hide them.
  Click OK.
  
• Added ability to show and hide the downvoted threads an infinite amount of times.
  
• Made blank links visible globally.
  
• Bug fixes.
  

Note:
For the UI to get the correct thread exception, the Jump to Last Page links had to be removed and not recreated.

Edited 1/19/2017 21:16:36

Awesome, this does actual hiding of users!

I wanted to get rid of the 'show hidden' button at the bottom to make them even more invisible. If anybody else wants to do that, just comment out these two blocks of code (or just copy/paste this):

/* hide reset and restore buttons

td1.id = "btnTd";
TBL.childNodes[1].childNodes[0].appendChild(td1);
td1.parentNode.insertBefore(td1, td1.parentNode.childNodes[0]);
sHT.onclick = function() {showHiddenThreads();};
sHTS.cursor = "pointer";
td1.appendChild(sHT);
hTS.cursor = "pointer";
hT.onclick = function() {hideThreads();};
td1.appendChild(hT);

*/

/* hide reset and restore buttons

var TBL = document.getElementsByTagName("table")[document.getElementsByTagName("table").length - 2];
td1.id = "btnTd";
TBL.childNodes[1].childNodes[0].appendChild(td1);
var btnTd = document.getElementById("btnTd");
btnTd.parentNode.insertBefore(btnTd, btnTd.parentNode.childNodes[0]);
sHT.onclick = function() {showHiddenReplies();};
sHTS.cursor = "pointer";
td1.appendChild(sHT);
hTS.cursor = "pointer";
hT.onclick = function() {hideReplies();};
td1.appendChild(hT);

*/

Later I'm going to figure out how to hide the 'Players' and 'Thread Exceptions' columns.

You went past the "DON'T MODIFY ANYTHING BEYOND THIS POINT!" marker!
BTW, next update should be out in a couple of hours.

Updates:

• Players and thread exceptions are remembered, so you no longer need to go into the code.
  
• Bug fixes.
  

Edited 1/24/2017 06:04:09

Make Warlight Great Again v1.0

Hard Fork of Dan's Userscript v1.8.1.1

Features

Removes 'Players' and 'Thread Exceptions' columns and buttons
Removes 'Show hidden' buttons
Removes 'Blank Posts Hidden' pop ups.
Restores 'Jump to last page' links
Hides user [REGL] Pooh by default
Restores all other v1.8.1.1 features

Instructions

1. Install Dan's Userscript, verify it's working
2. Replace the code with Make Warlight Great Again v1.0 code
3. Turn off script updates. In Tampermonkey: settings > script update > never.

Code: <redacted> I'll create a new thread soon.

Edited 1/25/2017 22:11:27

^
Do you know how insulting it is for you to remove the Players and Thread Exceptions columns and the buttons?
I've spent between 24 and 50 hours working the UI and I still am...

"Removes 'Blank Posts Hidden' pop ups."
I'll make them optional in the next update.

why is that insulting? i'm not interested in those features. nothing personal, i just want a way to make people invisible to me.

that would be like fizzer being insulted by yours script lol. because you are modifying his work.

I just love how upset you are by me that you would go and hack up someone else's work.

I just wait until your threads get downvoted (because no one thinks they are useful, enjoying, or interesting) and then chuckle to myself that you just will never get it.

I'm saddened that you won't see this post.

However, when you do post something nonsensical and I point it out, you won't even get to see why you are wrong.

So Wally, to point out to for the less intelligent people, its insulting because Dan put in a "Don't Modify Anything Past This Point" portion of the script.

You went ahead and modified Dan's hard work.

Start from scratch if you don't like it, or work within the permissions that Dan has set out if you are going to screw up his hard work.

^The Don't Modify Anything Past This Point mark was only in place to let people know that if they edited anything further down, then the script probably won't work correctly.

I don't want to hijack this thread, so I'll just create a new Tampermonkey script and a separate thread.

I have no intent on adding features or anything, I just want a blocking tool and this does that really well. Others might want it too.

Edited 1/25/2017 22:02:30

pinned forum posts would be cool, so stuff like userscripts and the 'every country needs a WL map' threads dont keep being deleted and remade

I'll try to add that in the next update.

Also, I'll try to bring back the Jump to Last Page links. I might make it possible to directly type player names.

Done some bug fixes and added way to directly edit player names (on Dan's Userscript menu and Players table heading on forum pages).

Note: the hide posts by this player button isn't working correctly ATM. Please use the new feature of directly editing player names instead.

Fixed bug that caused hide posts by this player add add to thread exceptions not to work.

Added ability to replace the word 'blacklist' with 'Personal Dungeon'.