Since May I've been getting a crazy amount of Chinese spam. About 40 messages a day. Although I would one day love to learn Chinese and find out how impressive I will be to my lover after taking their herbal viagra, right now I'm just trying to get my work done.
There are several articles out there claiming that:
can be used as a filter. I think this is old news as it doesn't seem to work anymore for any language.
So I googled the most common chinese characters and put together a filter like this:
的 OR 是 OR 否 OR 要 OR 不
This catches them all nicely. Sorry Chinese spammers.