I was playing around with Chrome's UserScript support and came up with this little tool until we get an official Blacklist.

I'd say it's still somewhat experimental, and probably a little unstable, so please take care. I've been watching it for a few hours now and apart from blocked user's message randomly appearing then disappearing (most probably due to the way the feeds are updated), I can't see anything else buggy.

Feedback welcomed.

Blacklist

Just a little heads-up. When you install the extension it will say this:

It can access:
Your data on all websites.

I honestly don't know why it's saying that as the rules dictated in the script state:

// @include      http*://guildwork.com/*
// @include      http*://*.guildwork.com/*

If someone can tell me where I'm going wrong, it would be much appreciated. I'm somewhat guessing at the moment that this is just some sort of standard message that Chrome gives you when a script is going to reference websites.