Wordtracker has added UK keywords to their existing tools meaning that now users can specify whether they want to view UK keywords only. Andy Midel of Wordtracker said:
We collect uncompressed log files from the ISPs. From these we extract the keywords from the major engines including Google, Yahoo, AOL and MSN amongst others, leaving just over 4% of the original files.
Search Engine Land reports that then go through these log files, extract data and clean it up.