Swansea City boss Michael Laudrup has no problem with his players using Twitter.
But he says they need to realise its a public forum.
Laudrup said: "When you are in public, you have to know what you are saying, and as long as you can stand up for what you are saying then there is no problem.
"The thing is if you are saying things and believing that nobody will see or hear - then you always have a problem.
"If I say something very, very stupid here, I will probably hear it today, tomorrow and the day after. You can compare this with Twitter.
"Obviously, the difference is that here I have three cameras and a lot of people - when I am on Twitter it is just my phone and me. But it is exactly the same."