PProofStories
Playbooks / Validate Demand & Problem-Solution Fit
Validate Demand & Problem-Solution FitFree

Realtime Keyword Monitoring for Reddit

Monitor Reddit for posts that mention the problem your startup solves using F5 Bot. Jump into relevant threads with helpful comments or direct messages. Start conversations that lead to product feedback, user interviews, or booked demos.Ask ChatGPT

2025-10-23 · 684 views · 57 likes

Tactic at a Glance

What it is

Use F5 Bot to get alerts when Reddit users mention keywords related to your startup’s problem.

When it works best

  • You’re early and validating demand
  • You want to find real user language
  • You’re looking for users to engage
  • You want content or product ideas from live pain points

Founder time needed

10 minutes to set up

15–30 minutes per week to scan alerts

Typical cost range

Free

Time to first signal

Same day (depends on Reddit activity)

Prerequisites

ICP and channel fit

  • Extension solves a real pain for users who browse the Chrome Web Store
  • Strong UX and retention signals from existing users
  • Targeting either general users (B2C) or niche pros (B2B/utility)

Assets needed

  • Branded screenshots
  • Short promo video (optional but preferred)
  • Quality description with keywords
  • Positive reviews
  • Clean onboarding flow

Tooling and setup

  • Chrome Developer Dashboard access
  • Google Analytics or PostHog
  • Design tools: Figma or Canva
  • YouTube account (for video)

Step-by-Step Execution

  1. List your core problems

    • Write 5–10 keyword phrases users might post when facing the problem.

      Example: “can’t stay focused”, “too many tabs”, “manage ADHD as a developer”

  2. Set up F5 Bot

    • Go to f5bot.com
    • Enter your email
    • Add each keyword or phrase
    • F5 Bot will monitor all of Reddit and email you daily when there’s a match
  1. Skim emails daily or weekly
    • Look for posts that match your ICP and context
    • Ignore off-topic or spammy subs
  2. Log valuable posts
    • Copy post links, user pain quotes, and date
    • Tag themes like “workflow pain” or “tool fatigue”
    • Use this for product, content, or messaging research
  3. Engage (optional but powerful)
    • Reply if you can add real value, not sell
    • Share tips, free tools, or thoughtful answers
    • Link to your solution only when appropriate, and transparently

Quick Validation Plan

1-Hour Test

  • Set up F5 Bot with 5 keywords
  • Wait 24 hours and review email alert
  • Ask: Are people talking about this problem?

1-Day Sprint

  • Monitor and tag 10–20 posts
  • Reply to 2–3 with helpful content
  • Track clickthroughs or DMs (use bit.ly if linking)

Pass or Kill

  • Pass: You see relevant, frequent posts with real pain

  • Kill: No posts in a week, or they’re off-topic

    → Rework keywords or pick a different channel

Examples

1. Focus App Founder

  • Keywords: “too many tabs”, “can’t focus coding”
  • Found 6 posts in /r/productivity and /r/developers
  • Replied with tips, got 2 DMs asking about their tool

2. ADHD SaaS Prelaunch

  • Monitored: “adhd tools”, “organize my day”
  • Logged 20+ complaints in a week
  • Used quotes to write copy and design onboarding

3. No-code MVP Builder

  • Keyword: “need a cofounder”, “can’t code idea”
  • Found early users in r/startups
  • Used F5 Bot to build a list of pain points

Resources