What Is Tumblr
No algorithm decides what you see. A post moves because a person moved it, which changes everything about how the place behaves.
Tumblr is a blogging platform where each account is a blog and the timeline is chronological. You post text, images, audio, video, quotes and links, and other people reblog your posts onto their own blogs, which is how anything travels.
There is no ranked feed deciding what gets seen.
The number under a post, its notes, counts likes, reblogs and replies together, and it is the metric the platform runs on.
The absence of an algorithm is not a nostalgic detail. It produces a completely different shape of attention.
On a ranked network a post is shown to people by a system, performs in its first hour and then dies. On Tumblr a post is shown to the people following you, in order, and then stops — unless somebody reblogs it, at which point it is shown to their followers, who may reblog it again.
That makes distribution a chain rather than a broadcast, and it has two consequences people find strange when they arrive.
First, posts have a long tail. A post can be dormant for months and then move again, because somebody found it and reblogged it. Content does not expire on a schedule.
Second, the reblog carries additions. Each person can add commentary, and the post travels with that thread attached, which is why Tumblr posts read as conversations held across years and why the format is so suited to jokes and annotation.
Tags are the other half. They are the search and discovery system: following a tag is how people find subjects, and tagging accurately is how a post is found at all. Only the first handful of tags on a post are indexed for search, which is the single most useful practical fact about posting there.
How posting works
Each account is a blog with its own name, theme and address, and one account can run several blogs.
Post types include text, photo, quote, link, chat, audio and video, which is a legacy of the platform's age and still shapes the editor.
The queue schedules posts over time, and drafts work as expected.
Asks let people send questions, anonymously if the blog allows it, and answering publishes both question and answer.
Notes, reblogs and how things spread
A note is any interaction: a like, a reblog or a reply.
Reblogs are the only ones that distribute. A like is a bookmark with no reach attached.
A reblog can add commentary, and the whole chain travels together.
There is no quote-retweet distinction: adding to a reblog is the normal behavior rather than a separate feature.
Tags, and the rule nobody tells newcomers
Tags are the discovery system. People follow tags and browse them.
Only the first few tags on a post are indexed for tag search, so the important ones go first.
Tags after that are used by the community as commentary, which is a native convention rather than a bug.
A post with no tags reaches your followers and nobody else.
Who is still there
Fandom communities, artists and writers, and a long tail of subject blogs.
The culture is text-heavy and reference-dense, and it is unusually tolerant of long posts.
It is not a marketing platform in the way the big networks are, and self-promotion that ignores the culture is ignored in turn.
For a brand, the realistic use is a blog that is genuinely about the subject rather than about the product.
Settings worth knowing
Blogs can be made private or password protected, and secondary blogs cannot be followed from your main account.
The dashboard is chronological, with an optional best stuff first toggle that most long-time users switch off.
Content labels control what is shown, and the platform's rules on adult content have changed more than once.
And the archive page of any blog is public by default, which is how people browse a blog's history.
Questions people ask about Tumblr
Is Tumblr a blog or a social network?
Both. Every account is a blog, and the dashboard is a chronological feed of the blogs you follow.
What is a note on Tumblr?
Any interaction with a post: a like, a reblog or a reply. The note count adds them together.
Does Tumblr have an algorithm?
The dashboard is chronological by default. Posts travel because people reblog them, not because a system promotes them.
How do tags work?
They are the discovery system, and only the first few tags on a post are indexed for tag search, so order matters.
Is Tumblr free?
Yes. There are optional paid extras, and the core platform costs nothing.
Can I have more than one blog?
Yes. One account can run several blogs, each with its own name and theme.
Keep reading
- followers on a Tumblr blog — A reblog chain starts with the people who already follow you, so that first group is the whole engine, and followers on a Tumblr blog acts on it.
- what a reblog does — The mechanic behind everything here deserves its own explanation, and what a reblog does gives it.
- whether anyone is still there — The obvious follow-up question is answered in whether anyone is still there.