I'm wondering if there's a way to make google searches where you can set filters you want to be in effect permanently - like a filter profile. So, for instance, every time you would do a search, you could get results that didn't include say, Yahoo Answers, without having to type in -yahoo -answers.
A feature like this would be invaluable because it's very common to perform a search and want to filter out a lot of popular sites that would normally top the rankings. For example, suppose you're searching for a news topic and don't want to read mainstream media articles. You could add the words reuters, cnn, huffington post, daily mail, and so on to your filter profile and never see those sites turn up in any of your searches ever again.
I'm asking because I'm interesting in making an extension that would do precisely this, but there's no point if such a feature already exists.