Meta Tags Retrieving Using Ajax

Hi…

i am making a social bookmarking site using wordpress and i am using user submitted posts plugin to allow users to post content

all is good till here….

But i am thinking to implement a function now ..i dont want want my users to enter all title , tags and description all the time .. can some one suggest how to grab meta tags from the url submitted and proceed it to user submitted posts ?

please have a look at

https://www.cini9.com/submit-url

when u submit url on above site …it automatically grabs all meta data and proceeds in to user submitted form page …

please tell me how to do the same implementation..i am thirsty to see it on my site

all help is appreciated ..Thanks in advance

with regards

sribharath