[unityByFreedom]

The author says it's too slow and works better as an asynchronous request. They also write something about rails' "User" object being unwieldy, whatever that is.

That still doesn't explain the Twitter dependency. It could just be an attempt to get popular and share the tool at the same time.

[strken]

I sympathise with this a lot. It's tempting to say "oh just use ActiveJob, and a CAPTCHA to stop bots, and Devise for auth, and MailChimp to let users know it's completed, and build a UI for submitting new jobs, and also for viewing pending and completed jobs", but all those little things add up.

[unityByFreedom]

Solve the bot problem when you get too popular, don't preemptively make it harder for people to try out your site.