Could have an option in the profile were we can ignore a particular user. that means it would display a small icon next to any threads that the user chosen to be ignored had posted in and questions posted by that user chosen to be ignored would also be marked or maybe not appear. Good idea? you could ignore a user if you felt threatened by them to save changing your username.
No you can't, this is Answerbank, not some sort of all frills messageboard with complicated profiles and involved rubbish like that. It's British. Mind you, PMs would be good.