SmartKeywords

Smart keyword searches for Firefox

Flosspick http://flosspick.org/search?query=%s

Amazon http://www.amazon.com/exec/obidos/search-handle-url/102-8576066-3843316?url=index%3Dstripbooks%3Arelevance-above&field-keywords=%s&Go.x=5&Go.y=13&Go=Go

The Piratebay http://thepiratebay.org/search.php?q=%s

Other collections

http://www.wormus.com/leakytap/Internet/CustomKeywords