• Needs To Exist
  • Posts
  • Idea Of The Day - Build the App That Forces You to Read Bookmarks

Idea Of The Day - Build the App That Forces You to Read Bookmarks

In partnership with

GM. This is Needs to Exist (aka NTE), delivering you a startup idea that fixes why bookmarks never get read.

NTE Pro gives you more than 6,500 startup ideas you didn’t know you were missing, browse the ones worth clicking.

WhoFiled shows you who raised, how much, and why it matters, real funding signals you can actually act on.

Check out all the past newsletters here

Here’s what we’ve got for you today.

  • Daily Idea - Saved Isn’t Read

  • Internet Arguments

You Saved It. Then What?

The One Liner

Make bookmarks come back until consumed.

The 140 character tweet (or X) version

Bookmarks aren’t memory. They’re intent. This quietly puts saved tweets back in your feed until you actually read them.

The Longer Story Version

The Problem

Bookmarks are a lie we tell ourselves.

We save things constantly. Tweets, threads, videos, links we swear we’ll come back to. On X especially, bookmarking is a strong signal of intent, “this matters to me later.”

And then… nothing happens.

The feed moves on. Novelty wins. Your saved content quietly rots in a separate tab you never revisit. The cost isn’t clutter. It’s lost intent.

Platforms optimize for engagement, not follow-through. They help you discover things, not finish them. And the gap between “I meant to read this” and “I actually did” just keeps growing.

The Solution

Instead of asking users to change behavior, this respects the one they already have.

When you bookmark a tweet, it doesn’t disappear into a graveyard. It re-enters your feed naturally until you acknowledge it.

Saved tweets resurface while scrolling.
A simple “Done” state closes the loop.
Once marked, it stops showing up.
Optional timing logic decides when, not how often.

No inbox. No push notifications. No guilt.
Just a second chance at the thing you already said mattered.

The feed didn’t forget. It just never helped you remember.

How We’d Build It

Phase 1: Prove the behavior

  • Browser extension, single platform (X)

  • Detect bookmarks and reinsert 1–2 per session

  • Manual “done” only

  • Vibe-coded MVP using tools like Plasmo + Cursor

  • Ranking logic kept dumb on purpose

Phase 2: Make it feel smart

  • Lightweight heuristics (time saved, scroll depth, topic overlap)

  • Optional reminders tied to sessions, not clocks

  • Local-first state to build trust

  • Quick iteration via tools like Supabase + Trigger.dev

Phase 3: Scale the loop

  • Expand to YouTube Watch Later, Reddit saves, Instapaper

  • Personal resurfacing models per user

  • Export paths to Readwise-style systems

  • Feed-aware ranking without manipulation

Why It Needs to Exist
People save more content than ever, but complete less of it.

Intent is expensive. Attention is fragmented. And every “I’ll get back to this” that never happens is a small failure of the product, not the user.

This fills a quiet UX hole people complain about without naming. It doesn’t optimize for more engagement. It optimizes for closure.

Saved should mean something.

Introducing the first AI-native CRM

Connect your email, and you’ll instantly get a CRM with enriched customer insights and a platform that grows with your business.

With AI at the core, Attio lets you:

  • Prospect and route leads with research agents

  • Get real-time insights during customer calls

  • Build powerful automations for your complex workflows

Join industry leaders like Granola, Taskrabbit, Flatfile and more.

The Internet Argues With Itself

The Idea
A system that brings your bookmarked tweets back into your feed until you mark them as done. No reminders. No nagging. Just a quiet second chance at the thing you already said mattered.

Now let’s argue about it.

The Optimist
Of course I’d use this. I bookmark constantly. Threads, ideas, things I don’t have time for in the moment. Bookmarking is me saying, “This is worth future attention.” The problem isn’t intent. It’s follow-through.

If the feed can decide what’s “new,” it can decide what’s “unfinished.” Surfacing one saved tweet per session feels helpful, not pushy. This doesn’t change my behavior. It completes it. Honestly, it feels like something the platform should’ve done years ago.

The Skeptic
If I really wanted to read it, I would’ve already. Bookmarking is a soft lie I tell myself to feel productive. Most saved things aren’t actually important, they’re just interesting in the moment.

Also, feeds are sacred. The second you mess with them, you risk breaking trust. One resurfaced tweet I don’t care about and I’m annoyed. Two, and I’m looking for the off switch. This could easily turn into “read it later” guilt dressed up as UX.

The Product Brain
This breaks the moment it gets greedy.

Too frequent and it’s noise. Too smart and it feels manipulative. The ranking logic has to be boring on purpose. No engagement hacks. No dark patterns.

The hardest part isn’t the tech, it’s restraint. The product has to know when not to show something. And it has to earn trust fast, or it’s dead. Scale only works if users feel in control the entire time.

The User Brain
Yeah, but… I still want it.

Not for everything. Just for the 10% of bookmarks I actually meant to come back to. The ones I forgot because the feed moved on, not because I didn’t care.

I don’t want reminders. I don’t want folders. I don’t want another app. I want the internet to remember what I told it mattered — and politely ask once in a while if it still does.

Why This Works
Because this is already a fight happening in people’s heads.

“I should read that” versus “I probably won’t.”
“This would help me” versus “this might annoy me.”

The idea doesn’t resolve the tension. It sits inside it. And that’s why it’s interesting.

These Ideas Got Argued About

Three startup ideas inside NTE Pro we couldn’t agree on:

• A product that looks useless until you price it
• A business that only works if users don’t engage
• A market everyone avoids because it feels too small

Half of us think these are terrible.
The other half thinks that’s exactly why they work.

That’s the point.

NTE Pro isn’t a feed of “good ideas.”
It’s 6,500+ startup ideas designed to force a reaction.

If you don’t have an opinion, it’s probably not interesting.
If you do, you should probably click.

WhoFiled Pro now includes a personalized digest tailored to the sectors, signals, and patterns you care about most. See the filings that actually matter to you, not everything. It’s free for a limited time. If you care about real signals, this is the easiest place to start.

One More Meme

Learn AI in 5 minutes a day

What’s the secret to staying ahead of the curve in the world of AI? Information. Luckily, you can join 1,000,000+ early adopters reading The Rundown AI — the free newsletter that makes you smarter on AI with just a 5-minute read per day.