So IP adress 101.99.133.27 vandalized my wiki yesterday. He made the main page a canidate for deletion, wrote on my "Warnings/Blocks" replaced about 160 words with: You will be warned if you are a dick. You will be blocked if you are an admin. He also changed ALL of the info on my info page (on the profile) to: i stupid. Then he posted on my wall: Hey you: shut up.
How long should I block him, and can I block him forever?