The term "scavvy" refers to someone who allows others to take advantage of them by making them do all their work or tasks, similar to being a personal butler or skivvy. The term "scabby" also suggests that the person being taken advantage of is left feeling used or taken advantage of, similar to having a scabby appearance.
"Hey, could you grab my pork pie from the table and then fetch my shoes for me!"
A person who knows a lot about the internet and how it works and how to use the internet according to his need other than just surfing, downloading and sharing.
Web developers and web designers are internet savvy people.
Hackers are one of the internet savvy people