Free keyword bots exist because manually refreshing subreddits doesn't scale past a handful of communities. But a raw keyword match is a blunt instrument — it can't tell "best CRM for a 5-person team?" from a decade-old post someone linked in a comment. Reddit keyword and subreddit monitoring done well means catching everything relevant, continuously, and filtering out everything that isn't before it reaches a human.
How keyword monitoring works
You start from a description of your product or a URL. MentionSpot converts that into a keyword and topic model — not just a list of exact-match words, but a model of the phrases and questions someone would actually use when they're looking for something like what you sell. That model is what gets applied to every new post and comment across your monitored subreddits.
Subreddits, keywords, and the topic model
Monitoring runs on two dials you control directly: which subreddits are being watched, and what keyword and topic model is applied to posts inside them. AI subreddit discovery suggests a starting list based on your product, including smaller, niche communities that are easy to miss but often convert better than the largest subreddits in your category. Both the subreddit list and the keyword model stay editable — tighten them if you're getting too much noise, broaden them if you're missing conversations.
Cutting noise before it reaches you
Every match against your keyword model gets deduplicated — reposts and cross-posts of the same thread don't generate repeat alerts — and then passed through an AI relevance and buyer-intent pass before it counts as a signal. That's the difference between a monitoring tool and a monitoring tool you can actually use: raw keyword hits alone tend to bury the two or three genuinely useful threads a day inside fifty irrelevant ones.
How often MentionSpot checks
Every ~3 hours on every plan, and a keyword that is producing leads never slows down. Monitoring runs as a durable background job regardless of tier, so it keeps working while you're offline — a relevant thread doesn't wait for you to open the app to get caught.
Read-only, by design
Monitoring only ever reads public posts and comments through the official Reddit API. MentionSpot never scrapes, never automates a browser, and never logs in as you — there's no bot account posting or voting on your behalf, and no risk to your Reddit account from how the monitoring itself works.
Choosing your monitoring plan
Solo (one product, 10 keywords per channel) suits teams validating whether their category shows up on Reddit at all. Growth (3 products, 30 shared keywords, 15 tracked competitors) suits teams that already know Reddit converts and want tighter coverage. If your buyers are also active on X, X keyword monitoring runs on the same engine, and every plan includes both channels.
FREQUENTLY ASKED QUESTIONS
Common questions
How often are my subreddits checked?
Every ~3 hours on every plan, and a keyword that is producing leads never slows down. Every plan runs continuously in the background, not on-demand.
Can I monitor keywords across all of Reddit, not just specific subreddits?
MentionSpot is built around a defined subreddit list plus your keyword and topic model, which keeps signal quality high. AI subreddit discovery helps you find the smaller, relevant communities you'd otherwise miss rather than firehosing all of Reddit.
What happens to duplicate mentions of the same keyword?
Duplicate posts and reposts get filtered out automatically before scoring, so you're not alerted twice for the same conversation.
Can I change my keywords or subreddits after setup?
Yes, at any time. Your keyword and topic model and subreddit list are both editable, so you can tighten, broaden, or redirect monitoring as your product or ICP changes.
PUT IT INTO PRACTICE
See your monitored subreddits before you commit.
Tell us what you're building. We'll show you the subreddits and keyword model we'd start you on.
Get the 7-day passCONTINUE READING