I'm a long-time user of free/open source software, and write various things for both fun and profit. I don't take myself all that seriously and I do all of my own stunts.
You can find me at these fine establishments on the web: Open Source Musings, The Monday Kickoff, Weekly Musings. and The Plain Text Project.
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For really sensitive stuff, I'd use a desktop password manager like KeePassX or Pass along with longer, more complex, and hard-to-remember passwords. That way, I have a bit more control over the password store. But for a majority of my web logins, Bitwarden is my tool of choice.
Would you be interested in writing a tutorial for Opensource.com on using RedNotebook? If so, you can learn more about submitting an article here.