I've been using the Overture Keyword Analyzer to make decisions about keyword phrases. So far its done really well for me. I recently paid for Wordtracker for a week to try it out. I've typed in phrases that OKWT says are 1200 last month and I believe its sort on as my page with that phrase gets about uniques per day and is ranked well. Wordtracker says 8 lookups for the same phrase yet i'm getting 5x that for the same phrase when looking at my SE referrals in my web logs. Any ideas?