I work for Cheezburger Network. We use them a lot via lots of if(FeatureFlag.IsEnabled("foo")){ /* Show the feature! */ }. They're easy to see if you can remove

I work for Cheezburger Network. We use them a lot via lots of if(FeatureFlag.IsEnabled("foo")){ /* Show the feature! */ }. They're easy to see if you can remove the conditional. You just check if the feature is enabled in production and if it is and it's been there awhile delete the flag. And yes we do feature flags in both Javascript and C# side.