"So, what bother Chinese iPhone users for more than 2 years finally invade here. And Apple isn't building a cloud based SMS filter like a mail spam filter is painful for this. Facts and tips: 1. Blocking is useless, they have tons of mail address/Apple ID. 2. The simplest way to avoid this is stop using phone numbers as iMessage ID, that could be inconvenient, but better than other options. (For me, if a contact only know my number, I would rather be a green bubble anyway.) 3. Apple is not sitting this, They block the iPod touchs spammers are using constantly. (It's not actually come from Mac+AppleScript)" - Ratoo