It says to send ramble prompts, but I have a question? A favor? You're an active Good Omens blog that tags posts. Can you post a list of common tags to help find things on this hellsite?
I'm afraid I cannot tell you how to find things on this hellsite; not even the Old Hellsite Gods know that. I can however do my best to explain the tags I use for this small, specific circle of hell(site). (And no worries, as shall be immediately demonstrated, I can and will ramble even about tags.)
I never intended for the tags here to be anything but a help to find things myself, so I'm not sure how useful you'll find them? A very common but useless for anyone but me tag for example is "my posts and additions". It used to be two tags, one for posts where I was the op and one for things I added to someone else's post, but as most of the posts I make are meta discussion stuff, the whole point is that people add to them and you can bounce thoughts back and forth, so it became that catch both versions thing. But it really only exists so I can find my own posts for personal reference and stuff; why would anyone else want to specifically find my ramblings? Another useless tag is "good omens"... This is my Good Omens sideblog, so almost everything here is Good Omens.
Okay. So. Common and/or actually useful tags. (How to tag search note: you can find tagged posts by entering the tag into the URL bar of your browser behind a blog's address. Replace all spaces with a dash. So searching for "good omens" on my blog will become "https://on-stardust-wings.tumblr.com/tagged/good-omens". I'm putting links for the bigger things, but I'll still be here by Christmas if I link every individual thing. As you will see, it's quite a list.)
There are things I consider Category Tags, which are pretty self-explanatory:
"good omens season 2" or "good omens 2" (Block that to avoid spoilers. I try to be consistent, but I'm fairly sure I've spelled it out as "two" a few times, or forgot the "season", so to be safe, block all conceivable versions of those if you need.)
"good omens fic" (other fic tags are "good omens fic rec", "ficlet" for the short read-on-tumblr things, and "my fics" and "my writing" which is currently just a bit of ramblings about writing progress and anecdotes, but will be more about the actual fics once I start posting something)
Character Tags are usually a character's full name (so "Newton Pulsifer" instead of "Newt"). For filtering, these are useful if you're looking for stuff including one of the less common characters, but as so many posts are tagged "Aziraphale" and "Crowley", usefulness for filtering of those two character tags is debatable. But I do use them consistently, so knock yourself out finding an endless list of Crowley posts.
Topic Tags filter for something specific, like scenes, events, settings or themes.
These include the Through the Ages Tags: "Eden", "the Fall", "1941", "1967", "1862", "the Bastille", "the Flood", "the Crucifixion", "41 AD" (might be sometimes tagged as "41 A.D." or simply as "Rome"), "Wessex", "the Globe" and "2007".
Events I know I have tagged would be "the Body Swap", "the Bandstand" and "the Bookshop Fire". Other common topic tags are "Aziraphale's Bookshop", "Crowley's Flat", "Crowley's Plants", "the Bentley", "Heaven", "Hell", "Holy Water", "Hellfire", "the Eagle Lectern", "the Wrestling Angels", "the Convent", "the M25", "love", "friendship", "imagination", "miracles" and I'm sure I've forgotten something.
Try "lol" or "OMG I'm wheezing" for funny things, and "oops it's sad" for posts that happened to catch the angst and depression train.
As they tend to be hard to find, posts with Book!Omens content of any kind are tagged "book omens".
I also have a tag for "wings", because wings are epic. Searching by that will give you lots of cool artwork with beautiful and fluffy angel and demon wings, plus a handful of meta discussion and fic.
Some non-Good Omens tags that sometimes come up are "fanfiction", "writing" (and variances and combinations thereof), "queer" and "ace stuff". But very few things here aren't Good Omens.
I suppose that's it. Happy fighting with the hellsite search and filtering function.