Rated 2 out of 5 stars

This add-on is dangerous! Google may block you, as written at http://www.google.com/support/bin/answer.py?answer=86640&topic=&useful=1&expand_useful=1&#helpful
"Sending automated queries of any sort to Google is against our Terms of Service [...] Note that "sending automated queries" includes, among other things [...] using any software which sends queries to Google to determine how a website or webpage "ranks" on Google for various queries;"

Google threw me out (= every search resulted in a 403 error page) after a few minutes of using this add-on

This review is for a previous version of the add-on (2.1.0). 

Think again, please.

Google may block you when you perform too much querries to it. So, please set - "load parameters by request" or change your ip, use proxys and clear your coockies. or disable seoquake when you surfing on web for fun, not for work.