Do not change your URL for Halloween.
Do not. Don’t do it.
I know all the cool kids are doing it, and you badly want to make the ten thousandth variation on the spoopy joke, but changing your url is a bad idea. You should think of it as changing your name: something that causes widespread annoyance and confusion, which should only be done when you absolutely have to.
1.) I have quite a few people who read my blog by just visiting the page. They follow me, but they don’t
followme, either because they don’t have a Tumblr account, or they don’t care. If I change my URL, these people are fucked, because your URL is your name. Don’t fuck your followers.
2.) If you change your URL, every link to your blog breaks.
Breaking links are bad. Everybody knows this. Tim Berners-Lee, aka the guy who invented the internet, first complained about this fifteen years ago, in a document that’s still easy to find because the URL has never changed! Everybody hates broken links. Everybody.
3.) Every search engine link breaks, which means I can no longer google for shit on your blog. They start reindexing pretty quickly, but for a blog with 1,000+ posts, the process can take months.
Don’t change your URL. But if your halloween joke is so transcendentally funny that you absolutely have to, then you can set up a redirect.
First, change your url, then create a new blog at your old URL.
Second, delete all the theme code.
That’s it! You’re done. Now following any link to your old URL will properly redirect you to the post new URL.