Does anyone know of any websites besides copyscape and plagiarismdetect that are good at detecting plagiarism? I would like to make sure that my spun articles look original. These two sites have helped so far but if there is something more accurate I would love to try it out.

Lots of free ones available -- check w/the big G. Seach BHW for duplicate, dedupe, etc. This topic comes up often and lots of suggestions have been given. Off the top of my head, dupecop is mentioned often.

here is another site that offers that kind of service. You can check your articles via G & Y. hope I help.

Copy and paste some sentence on Google and hit the search button. Very quick and effective.

Also, I use Google Alerts to keep me inform if Google indexes my content.