F5Bot is a free service that emails you when your selected keywords are mentioned on Hacker News, Lobsters, or (parts of) Reddit. Use it to monitor your brand, your projects, or just topics you're interested in.
It's really simple:
The service is completely free. There is no artificially low usage limit, and there is no up-sell.
More questions? See the Frequently Asked Questions.
Ready to try it out? Sign up now!