[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.