Pronounced "Fupped".
When an Internet Service Provider punishes a
heavy user of its service. FUP stands for Fair Usage Policy and is becoming a common term of service provision amongst ISPs in the UK as a means of keeping download bandwidth low and thus the ISP's profit margin
high. Typically, this tactic is employed by ISPs against
heavy downloaders, such as those who use peer-to-peer clients like Bit Torrent or eDonkey networks.