The web, weblogs, wikis and all hypertext allow the user to create connections between links of both content and the location of content of computer networks. These Internet phenomena frequently feature linkage as part of their content to add detailed meaning with more information. This is an intergral feature of hypermedia.
Linkage from a popular website to a small server can result in the small server being overrun and it's bandwidth resources exhausted. This is called the Slashdot Effect for the techy Slashdot website that often showcases the new and unique (and often ill-prepared for the resulting popularity).
"...a legal dispute that could dictate whether it's legal to publish or link to certain materials online."