Edit: There are updated versions of this attachment down the thread. Latest is v0.83 in Post 41873.
In the exceedingly popular thread Add-on to exclude domains from right-click?, I hypothesized a Greasemoney userscript that would hide selected hits in a search results page. I've created a version 0.1 of such a userscript. If you are a Greasemonkey user, why not give it a try?
Some general notes:
(1) Pale-colored buttons reading XX should appear next to the page title in your results. Click this button to add that domain to the blacklist. On the next reload, those hits should be suppressed as described in #2.
(2) Results for blacklisted domains are replaced with a button that lets you view the result if you want to. This is a one-time viewing; the domain still will be suppressed on the next page load.
(3) If your blacklist becomes messed up, you can edit or clear it in about:config (there is no other UI for managing the list).
(4) bigresource.com is blacklisted by default, but after you add one of your own, you can edit that out if you wish.
Although not getting unwanted hits in the first place is more efficient, this tool works on any Google results page regardless of how you got there. At least until they change it again.


), and as it looked as in Stuart's first screen shot, I understood that I had to add something, so added the google.se URL under included, similar to the above, but got no change in the results.
). I didn't bother to add it again for a test; since I've a UK bookmark, and just tried it.

