When a website ends up denied (saturated with external communications requests, such that it cannot respond to legitimate traffic, or responds so slowly as to be rendered effectively unavailable) due to a sudden enormous spike in popularity.
A Social Network Denial-of-Service (SNDoS) could be started by one Facebook user setting his/her wall status to: "Go to urbandictionary.com, type in your first name, copy and paste this as your status and the First entry for your name under comments"
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".