Chessmaster1000: That´s is not entirely true. Sometimes I share the computer with my family (weekends, hollidays). It means that Nuno Miguel, ramones, David and I can sometimes have the same IP. And if I can remember it was I who created one of my cousin´s subscription in my PC, if I remember well.

Most of the times I use one or two PC´s at my office. I have 2 friends there who also plays in brainking.

One of my cousin´s plays at work, and he have somefriends from his office who plays on BK.

Some other portuguese players from the site also share the computer with their family (Aissi-Aissi´s brother, El Cid-PauloAguia, Ferjo-Alfer). Most of these guys came from the same university and they may use the same PC.

By these examples you can see how hard is to detect the real from the false ID´s...

I think the better way to detect these cases is to analyse games between players...