Surf Canyon is a useful FireFox extension that enhances your web search experience with recommendations based on your preferences:
The addon adds a tiny icon to each listing in SERPs; by clicking on it you will see “more sites like that one”:

What’s more the tool adds relevant tags above the search results to refine your search.
You can control the addon behavior: specify web sites that you prefer and web sites you dislike. Then search results from that domain will be more likely to appear in Surf Canyon’s recommendations. Web sites from your disliked list will be removed from search results pages (for example, you may add Twitter or Wikipedia to see more results from them).

Main features:
- Available for Internet Explorer (IE6, IE7 and IE8);
- Google, Yahoo!, Bing, Craigslist and Lexis Web (you are free to exclude any of them);
- Customization: set the max number of relevant sites to be shown;
- Odometer: keep track of how useful the addon appears to be.





