Vbulletin make unique content?

Hi,
Firstly i am sorry about my English.

I am using vbulletin and vbulletin auto poster bot.I changed and editted theme options and all auto thread's title adding in post.This is the my first method for make unique content.However it is not enough.I want to add always different a sentence every post.It would be a proverb or random word group but i cannot find any plugin for this job.

Have you ever seen a plugin for my wanting?Or have you any html or php code?

I hope I explained my problem able to provide

ohh..are there any body here? i think this is very usefull way to make unique content