My top 3 seo plugins for firefox, i use these all the time and find them invaluable ,

Number one,

• Is from seobook, this awesome plugin shows a whole load of seo information from within the results page, links,.edu links,.gov links, dmoz listings,yahoo directory listings,bloglines,domain age plus loads more, you can download here http://tools.seobook.com/firefox/seo-for-firefox.html

Number two,

• From the the guys at redfly studios, this time saving plugin allows you to view the results from different cities, regions and countries ,top plugin for monitoring your campaign progress abroad.You can download here http://www.redflymarketing.com/blog/google-global-view-results-different-locations/

Number three,

• Last but by no means least,from quirk.biz this handy plugin highlights all nofollow links on a page {does much more but this is what i mainly use it for} saves having to dig around in the source code. You can download here http://www.quirk.biz/searchstatus/

If your serious about pushing your site up the serp ladder,you will find these plugins extremly helpful in planning and implementing your campaign.