SEOQuake, an useful SEO tool for Firefox users.

With this tool you can find out SEO information on any site.

http://www.seoquake.com/

 

Yeah I have been using it for a long time now.

 

i had used it but in my opinion Google consider query from this plugin to its server as automated and hence blocked my IP. When i disabled this, my IP get normal status within 1 hour. Is it true or just a coincidence?

 

Great tool, don't overuse it or you will temporarily be shut out of google/yahoo/bing, but extremely useful for research. They just released an update.

 

SeoQuake has over a Million users so i'm pretty sure that 60%+ of the members here at DP are aware of it.
There are many other useful addons too. I personally use 10+ Seo Related plugins/addons.
As far as being temporarily blacklisted by Google/Yahoo, you can set the get parameters option to 'By Request' from the 'Preferences' section in SeoQuake.

 

i use this plugin

 

Nice tools, I use it.