You enter either a URL or an article (in text format) and the script will give you an analysis of the significant words and phrases used.
Quite often you find that you THINK you've optimized your writing for a particular word, but that as far as the search engines are concerned it is about something else entirely.
The script is free to use and there is no name squeeze.
Please try it out at Which keywords does the search engine see on your site?
I'd be very grateful to hear any comments, suggestions or bug reports about the script so that I can make it even more useful int he future - please PM me.