add ping of ping like value to your ingame browser and ingame browser filtering

other games have ping, yes w windows 7 you have to run them as administrator to see the ping

if that is too hard, some games implements their own ping like functionality

basically you make an empty request or a request that just returns nothing or ok of the server and you basically indicate the number of milliseconds it takes to make that request!

not that hard to do since clients have to communicate with the server and server with the client it should not be hard to add another.