how do u block someone?

Same here, I have no idea. This is what one of my フレンズ on ファンポップ said.

Go to your messages and 次 to the inbox/sent/trash options there is a "block users' option.
Just click on that and add the usernames of the users あなた want blocked. Any further PMs sent によって blocked users will automatically be discarded into your trash box.
Hope this helps!

Didn't really work for me, but I guess あなた might figure it out, since I have a feeling あなた are smarter than me.

あなた can only block someone IF that person has messaged あなた first によって clicking on it and theres the "Block user" button at the bottom, then he/she can't make contact with あなた によって ウォール または message.

umm just go to your offline buddies try to find wait i forgot im sorry

Throw a brick at them? .3.

press the block person bottom
Baka!

2 ways
1 = go to messages and hit block users
2 = go on meebo look up the person ( if they on your ファン list) and hit block they can't message you.