Oh thank you for your quick answers
I got my account back and changed the password imediatly but he says he can see what I do.
Though I am not sure what he can see.
I gave my password to a friend.
Now we are not friends anymore and he has my SL IP adress.
What can he use it for?
Also: is an SL IP adress the same as a general IP adress?
Hope you can help