Hmmm … that’s a lot of blogs! ??
I’ve tested the plugin on my development server which only has 6-ish blogs, so I’m afraid I wouldn’t know how the plugin behaves in a big scale mu-environment, especially if it has over 4,000 blogs.
In my case, plugin was Network Activate and appeared forcibly enabled for all users of the multisite (as Network Activated plugin should). However, there was no way to define network default settings and each user was able to customise setting to their own needs.
I could fix the latter issue by hiding the menu item using Admin Menu Editor but I believe that the former issue (network wide defaults) definitely needs to be addressed before the plugin can be used in mu environment.
@ sarangan112: When you say “it didn’t work”, did you get any errors? Anything in the logs? Could you give us a few more details? I would be very much interested to learn what happened.