"The Slashdot effect is the term given to the phenomenon of a popular website linking to a smaller site, causing the smaller site to slow down or even temporarily close due to the increased traffic. The name stems from the huge influx of web traffic that results from the technology news site Slashdot linking to underpowered websites. However, it has been used to describe the same effect when generated by other websites or metablogs such as Fark and Digg, leading to terms such as the Digg effect or Fark effect. Typically, less robust sites are unable to cope with the huge increase in traffic and become unavailable – common causes are lack of sufficient bandwidth, servers that fail to cope with the high number of requests, and traffic quotas. Sites that are maintained on shared hosting services often fail when confronted with the Slashdot effect."
Fonte: Wikipedia - http://en.wikipedia.org/wiki/Slashdot_effect