A GREAT SITE FOR TUMBLR CODES::
GREAT tutorial here::::: http://tumb1rtutorials.tumblr.com/post/18644770364/use-install-and-use-custom-fonts-google-web-fonts
Tutorial here at the bottom of the page!

Make sure you have your tumblr open in another tab.
Step 1 - Add “Stylish” to your Google Chrome header here https://chrome.google.com/webstore/detail/fjnbnpbmkenffdnngjfgmeleoegfcffe (It’s really easy and safe and takes like 2 seconds, and its free). Once it’s finished adding to your toolbar, you should see this icon:

on the right corner of your screen.
Step 2 - Go here and pick out a background theme you want, you can search for certain keywords on the left http://userstyles.org/styles/browse/tumblr
Step 3 - When you’ve found the one you want, click on it an and click on the green “Install with Stylish” button.
Step 4 - You’re done! Easy, right?
If you don’t like your new tumblr background for some reason, or want to change it, just click on the “Stylish” icon and choose “disable”. That way it will still be stored for future use, but you can still change your current background. If you want to permanently delete that background from your Stylish, then hit “delete”.
Let me know if you have any questions. :)
(Credit to r3veries ))
This one is pretty awesome, but it no longer works.. those claiming to have it they do but it no longer works.
It used to be like this:
highlight the word “block” on their ask before you reply, then click “view selection source” or for chrome sometimes it’ll be “inspect element”.

for the inspect element way it’ll have like “are you sure you want to block blahblahblah” and a couple lines under that it will say “IP:” with a bunch of numbers. once you get it you put it into this site:
http://whatismyipaddress.com/ip-lookup
I’m sorry but it no longer!
I know you all have been waiting for this one. (dont let any bitch ask you to follow them so as to give you this simple code)
This is the one I use, and it works wonders. And if any bitch tells you “follow me and i’ll give you the unfollower tracker” bitch-slap her for me.. here it is for all of you guys :D
Unfollower Tracker:
http://userscripts.org/scripts/show/112207
:D i think it works best in Chrome. cuz i use that and i dont use Mozilla… i hate it..
Here are some websites with great cursors:
www.cursors-4u.com
www.dolliecrave.com/tumblr-cursors.php
www.totallylayouts.com/tumblr/cursors/mouse-cursors/
and I have a few cursors on my cursors page ::: HERE
Click here for the code.
On the third line, change #BD3EA8 for any color you want. (Full list of color codes here.)
Place the code before <head>
Note: Sparkles don’t appear in preview in some browsers.
(credit to tumblrtutorials101)
wand cursor here - http://www.cursors-4u.com/cursor/2011/02/06/harry-potter-magical-wand.html
if you’re gonna use this Copy & paste the code into the description box.
sparkle cursor from here - http://mf2fm.com/rv/dhtmltinkerbell.php
Copy & paste the code between the <head> and </head> thing on the edit HTML page when you click customize on your blog! :)
They can work individually or together.. but if you use them both together it will look like the sparkles are coming out the other end of the wand!
There are many link hovers. like the sparkle link hover, rainbow text hover…HERE::
<style type="text/css">a:hover{background:url('http://dl9.glitter-graphics.net/pub/80/80039njfma9svnd.gif');}hr{background-image:url('http://dl9.glitter-graphics.net/pub/80/80039njfma9svnd.gif'); </style>
To have your text links turn rainbow when hovered over. Paste this codebefore the </head> tag
(Credit::: http://designingyourblog.tumblr.com and academyoftumblr)
To have a typing title paste this code between the <head> and </head> tags
Note: Change YOURMESSAGEHERE to your message
(credit to http://designingyourblog.tumblr.com)
This is the code when you hover over a link, it will enlarge, and even change color. Paste it after the <head> tag in your theme:
<style type=”text/css”>
A:link {text-decoration: none}
A:visited {text-decoration: none}
A:active {text-decoration: none}
A:hover {font-size:24px; font-weight:bold; color: red;}
</style>
To change the font color, just change where it says red.
(Credit to http://designingyourblog.tumblr.com/)
This shows you how many people have visted yoru blog..
go to http://www.freehostedscripts.net/
and click on the “Text Hit Counter”:

fill this box and generate the code.. just go to your tumblr customize page and put the code in the description box :D
This shows how many people are on your blog at the moment..
go to http://www.freehostedscripts.net/
and click on the tab that says “Online Users”

fill this piece out and generate the code.. next go to your tumblr customize page and place the code in your description