Searching for online petitions and their status

[Alok2002]

Is there a site to go to and find out about the status of online pertitions for labor certification related to green card. I think I saw one but lost the link.
The link lets you see for a particular company and state , all the petitions filed by that company and their status , approved ,pending or rejected.
This was very useful since , you can check the labor certification success rate for the employer.

If anyone knows about it , please let me know.