Apparently I do not get the world wonder benefit. For example I just won Beijing which had beat me earlier to Porcelain Tower, but I did not get a Free Policy 
So how and which wonders really give benefits when conquered instead of built?
I have just DoWed Elizabeth to get Great Lighthouse for my navy as Siam is getting irritable across the sea.. I wonder if I'll get the wonder bonus of Great Lighthouse?
I started targeting the AI which has beat me to a wonder after reading about UN and diplomatic victory on this forum, but I don't get it.
RANT:
BTW now playing on Prince (which I know is not much) after reading War Academy for CiV.. Thanks for it... Maybe I'll win a Time victory (seems to be the only VC I manage to get) on King someday..

So how and which wonders really give benefits when conquered instead of built?
I have just DoWed Elizabeth to get Great Lighthouse for my navy as Siam is getting irritable across the sea.. I wonder if I'll get the wonder bonus of Great Lighthouse?
I started targeting the AI which has beat me to a wonder after reading about UN and diplomatic victory on this forum, but I don't get it.

RANT:
BTW now playing on Prince (which I know is not much) after reading War Academy for CiV.. Thanks for it... Maybe I'll win a Time victory (seems to be the only VC I manage to get) on King someday..
