English is the lingua franca of the Internet, but this example shows that some acronyms are not as global as people might think. I guess BOGO (buy one get one) might be commonplace if you shop in an American store, but anybody else that doesn't live there might not have had exposure to it before, and get quite annoyed. Same with stuff like GOP (Grand Old Party) or even DUI (Driving Under the Influence). Americans on the Internet just love to drop their three-letter acronyms on an international forum.
Acronyms are context and location sensitive. One should refrain to use them on the Internet unless you can expect anyone who's reading you to know then (i.e. FBI, WHO, UN)
BOGO as a shopping term has been around as long as I can remember.
Then I got to explain bogo as a prefix in computing and chess before picking nits like "shouldn't it be BOGOF" (typical HN commentor that I am)?
I've never seen it as just BOGO though.
No, that just happened a moment ago. :)
I am familiar with the concept; just not familiar with it as an acronym.