with Dynamic content may offer current news, access to databases
(e.g. booking a ticket) or have pages tailored to individual users.
They are usually the sites of large companies and, apart from the
page content, may be identified by pages ending in something other
than htm or html (asp, jsp, cfm etc.)
Portals may offer a large proportion of dynamic content. This category
seems to follow generic rules. These examples of portals (Figure
4) are both Internet Service Providers (ISPs). Both get their news
feeds, and pictures, (1) and (2), from the same source.