Seems there is always some problems:
Difficulty to sing up (with another Username) / create a new account.
Always have an error message:
"429
Too many requests."
Trying with different preferred services:

• GitHub
• Google
  I remember i was able to use Open Id before:
  It is gone ?
  that's the same..

Can only run this present account.

• The captcha is always present...

Note:
I use an Autopager userscript.
With your site, i have after 2 pages loaded, this same error message:
"429
Too many requests."

Can fix these problems ?

I edit:
speed_by_over = 100, // edit this value

to different value but i dont' see a great change (just for 550, where it's very slow...)

So what's value type ?

Re: @decembre:

Like it's impossible to re-edit our post here (...):
I read the possible reason of these warning by reading the description of your script in greasy Fork:
FireFox 35 extra security broke GreasyMonkey GM_listValues

Have you tested this script on your code page?:
oujs - JsBeautify
If you click on the "Beautify" button , you shall see some " warning" icons on the left side with recommendation on hover.

What you think about its pertinence , is useful for you ?

For me is like Chinese, i am not coder.
;-)

Here's just a css to make the arrows less prominent and normal on hover:

/* ==== FIR - TopAndDownButtonsEverywhere (by MAX30 - OpenUserJS) ==== */

#play_btn_up {
    background: url("data:img/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAUCAYAAACAl21KAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAB+SURBVDhPY1i1atV/amAGahgCMoNhaIGlS5cKAp19BoRBbLJcj2QILDJINwzoAmMgfoclIkBixkS5DI8hMJcRNgxoSBoOl6CnNZBhaVhdBjWE1MSJahjQkA4KEmYH2GUrV66cSYEhYB+AzKBtFiHkQqKiH6Ro1CDCQTWgYQQAs81DU0G/83sAAAAASUVORK5CYII=") no-repeat scroll 50% 50% rgba(0, 0, 0, 0.7);
    position: fixed;
    height: 36px;
    width: 13px;
    top: 63% !important;
    border-radius: 5px 0 0 5px;
    bottom: 53%;
    cursor: pointer;
    z-index: 99;
transition: width ease 0.7s !important;
}
#play_btn_dn {
    background: url("data:img/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAUCAYAAACAl21KAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACPSURBVDhPY2DAAlatWvUfH8amB6vYqEGEg2pgw4iQ7cTKM6xcuXImsYpxqQOZAQ4woIIOCgzrQAl1oEFpZBiWhitFgwx7R4SBIDXYDYGZDFRgTMAwkCHGhBMRJMxwGUa8ITCbli5dKgg08AySN8+AxIhyCboiJMPIN4Qsm6miiYioxltawvSDYogohYTUAQC80UNTOht/YwAAAABJRU5ErkJggg==") no-repeat scroll 50% 50% rgba(0, 0, 0, 0.7);
    position: fixed;
    width: 13px;
    height: 36px;
    right: 0;
    top: 68% !important;
    border-radius: 5px 0 0 5px;
    cursor: pointer;
    z-index: 99;
transition: width ease 0.7s !important;
}
#play_btn_dn:hover ,
#play_btn_up:hover {
    width: 36px !important;
}

/* === END === */

"and I know you know this already....."
Yes i know .
:-)

No solution for the favorite functions ?

It' always impossible to edit our post ?

Re: @decembre:
No new ?

I use the Marti solution with the help of its GM_setStyle.js for this script:
Userstyles TableView+Enhancer - Dark/Grey

I post my CSS to Pastebin (by example for this script: http://pastebin.com/raw.php?i=kJw7adkj)
and add into my userscript header:

// @require       https://greasyfork.org/libraries/GM_setStyle/0.0.15/GM_setStyle.js
// @resource      http://pastebin.com/raw.php?i=kJw7adkj 
// @grant         GM_getResourceText

after i use this code:

let styleNode = GM_setStyle({
    data: GM_getResourceText("css")

It's not very clear:
Can i make a groupe of script i like ?
And where i need to go, i search but found noting like "add to group" indication...

Why the "one script limitation" ?

We can't change our USER name ?

How delete our account to create a new one without our email inside ?
Can you provide an independent (by email only) way to login (without use current form of authentication)?.

forgot it, there is another post about it :
Warning "missing 'new' prefix when invoking a constructor" on calls to GM_ API

Sorry i can't reedit or delete posts here...
:-)

When i hover it, it provide a tooltip:
"Missing 'new' prefix when invoking a constructor."

Haa yes, good news, now Firefox accept some new Filter.
By example:
filter: invert(100%)!important;
filter: grayscale(100%)!important;
filter: hue-rotate(60deg);

I see too many requests in google search with http://g.etfv.co/ (that is suggested before), and it seems take to long...

I test this one now (with it i don't see all these requests : it provide favicon silently):
//img.src = 'http://g.etfv.co/' + protocol + "://" + host; // As suggested by decembre
img.src = 'http://api.byi.pw/favicon?url=' + protocol + "://" + host; //OTHER service suggested by decembre

I found it here :
An alternative for http://g.etfv.co/{url} favicon services
http://stackoverflow.com/questions/22842262/an-alternative-for-http-g-etfv-co-url-favicon-services

What you think of it ?

In progress....
yes, like favorits.
;-)

???

Here how to use it :
Using URL values for the cursor property

You can add your own cursor (CSS)
// Tweak CSS
GM_addStyle('a[href^="javascript:"] {cursor: url(http://www.soliddna.com/SEHelp/ST5/EN/graphics/nonLocalized/se/user_interface/select/cursor1.gif), auto;}');

Re: @jerone:

Ok....

This button seems inactive ?

Re: @srazzano:
Seems good now , more clear for me on my large screen.
But, i have not tooltip on truncated description ( one or two row options enable)....

Re: @sizzle:
Can you open a "pined" topic around:
"Openuserjs.org" idea, request and bug ?

Re: @srazzano:

Thanks....
An option to move the description under the title ?
Other requests:

• Option for more results.
• Make the block Title+Description clickable (go to the script page).
• Tooltip for the complete description (if in a one short line)

Ps:
Where find your "old" scripts now ?