Since so many people don't seem to get the message:
1: I am not interested in trading.
2: Do not leave comments on my profile telling me you want to make me an offer for trading.
3: I am NOT INTERESTED in trading.
4: Do not send me friend requests to try and make me an offer for trading.
5: I AM NOT INTERESTED IN TRADING.

Ignore any of the above points, and you will be blocked. No exceptions.