[thecooluser]

I've been desperately looking for an app with this feature.

Can you look at how "LeechBlock" for Firefox works? It's practically perfect but's only for Firefox.

:)

[arikrak]

Have you tried "StayFocusd" for Chrome?

The issue is it's too easy to disable a Chrome extension, and then you need to re-enable to get it back. It would be better if they allowed you to temporarily over-ride it instead.