I've been getting a lot of Nigerian news lately:

I'm not talking about spam. I have a new Nokia N800 PDA, and of course I want to get news about it. I set up a Google News Alert for "N800". After a few disastrous days, I changed that to: N800 -nigeria. 'N' is a money abbreviation in Nigeria, so I get news stories about anything costing n800. The "-nigeria" is not nearly a good enough filter. After all, in the US, we don't say "USA" every time we mention dollars. Unfortunately, "N800" seems to be a common amount of money in Nigerian news (in thousands or millions).