Forbidden words in POST submits

[rebootedc79]

I'm using some blog-like commenting system that uses some Ajax, and lately I've found that if you write the word "hentai" the response is a 403 - Forbidden. The server refuses to submit the POST via Ajax to my PHP script and throws a 403 error.

Amazing.

But the most bizarre thing is that I can write that word in simple POST submits (like in my content management system) but not in ajax's ones.

It simply blows my mind xD

 

[caftpx10]

I believe that's to prevent pornographic spam.
To be honest, I don't know why you've even typed that in the first place. XD

 

[ace_case]

Is this a custom script, or something you found somewhere? If it's the latter, it may have a built in spam protection filter.