I tried to scrape a specific field on Toys R Us's page...
http://www.toysrus.com/product/index.jsp?productId=13157031
with the selector "price".
It all worked for one time through the page load, then it never worked again. Do some sites have ways of preventing people from scraping their content? I'm kinda new to this, please be gentle. I was using Wordpress, WP-Web-Scraper, and the following as the code in the page:
Price:
[wpws url="http://www.toysrus.com/product/index.jsp?productId=13157031"
selector="price" on_error="error_show" user-agent="diaperbot"]