No scraping Wordtracker’s free keyword tool
By Benj Arriola - Posted on Mon Feb 12, 2007Wordtracker is one of the popular keyword research tools you can use on the Internet. It’s relatively cheap and robust enough to do basic keyword research that can help many websites that are not really in super highly competitive markets. People that are really saving on their expenses sometimes just rely on the free Overture tool. But sometimes relying only on one source will not really get you a good picture of the daily searches. But Wordtracker decided to offer a free tool as well. So taking out all the bells and whistles, synonyms and other organization effectsion, Wordtracker came up with it’s free keyword research tool here:
http://freekeywords.wordtracker.com/
Probably to battle with other free tools, and entice people to use it to get the paid version that has a lot more features. Now one of my officemates mentioned he will incorporate the Wordtracker results in his own web-based tools. And I just tried that right now, it was working for a few tries as I was able to extract keywords. But after some tries, it was not working. And I kept refreshing the page and looking for syntax errors in my PHP code and everything seem to be fine, but no keywords were pulled out. I modified the code to simply make the page appear and there was the problem. The free tool has CAPTCHA also. So no scraping Wordtracker. 
I guess you can either, (1) detect the CAPTCHA if it exist and display it, and ask for user input also; or (2) use their API which requires you to be a subscriber and I believe also some approval to use the API.
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