User blog comment:Gary299/Dx.1 / NEW's OVA Discussion/@comment-16281343-20150307161009/@comment-16281343-20150307163251

There's a chrome extension called Page Monitor. It basically checks if something changes on a website.

That's why I was alerted when haremking.tv went down then went back up minutes after with the update.

The downside with this is it checks everything including ads.