Determina l'insieme a cui appartengono gli elementi dati e ne estrae altri elementi: provare con Londra e Parigi
Undestands which set, given elements are inside, and choices other elements in that set try with London and Paris
Surfing Internet could be, enter a site and be bounched on another site, also can be entering your web-window with an idea and drift on another idea without collapsing on a site: this is the intention ( :) ) i suppose of intention-cloud. Let's try.
Imagine something like a shared browser: when you add a site to your preferites as a matter of fact you add to community's preferites and when you search or tag a resource you can (on-line) grep it from community's ones... isn't it nice? : flock