Ye' old general discussion board. Basically, for everything that isn't covered elsewhere. Come here to shoot the breeze, shoot your mouth off, or whatever suits your fancy. This forum is not for asking programming related questions.
You need to write up an algorithm to differentiated between what they've written and then what you'd expect for them to have written. It's no easy task.
there are free available sevices for offering keywords, including free softwares and free online sites.
Is there a way for PHP (or other languages) to use them?