Why is gamespy so rubbish?

it says its one of the best and yes it does get put on alot of good games but if they are what they say why is it so rubbish? on pc games. alot of people have complained about it and yes its even got its own website to shut down gamespy

ps. if your a noob you wont know what im talking about ;P k

ahh...so thats y i dont understand