FTW means For The Win
The abbreviation FTW is origination from the Gamerswereld, but has been taken over fairly quickly in online communication (IRC, MSN, Twitter). You use to report that you find something very good, likes it. For example, if you are a Feyenoord fan, you say:
Feyenoord FTW
Are you Apple fan, then it is:
Apple FTW
On Twitter, a hashtag is often created:
Twitter #FTW
FTW Images