Dynamic inventory enhancement

A system of enhancing a response to a query for an item at a website, comprising:

• a program store storing a code;
• at least one processor at a server hosting a visited website coupled to said program store for executing said stored code, said code comprising;
• code instructions to obtain a request from a client terminal for retrieving information of a requested item;
• code instructions to detect a presence or an absence of said requested item in a local catalog of said visited website;
• code instructions to present, in case of said presence, a first presentation of said requested item at a graphical user interface displayed on a display of said client terminal;
• code instructions to issue, in case of said absence, a search query for said requested item in a shared catalog comprising a plurality of offered items available from at least one another website;
• code instructions to receive a response from said shared catalog, said response comprises at least one result item from said plurality of offered items which corresponds to said requested item;
• and
• code instructions to present a second presentation of said at least one result item at said graphical user interface, said first presentation and said second presentation share a common visual format.

A computer implemented method of constructing a shared catalog, comprising:

• registering each of a plurality of websites at a shared catalog service;
• importing a list of a plurality of available items offered by each of said plurality of websites;
• importing at least one characteristic of each of said plurality of available items;
• classifying said each website in one of a plurality of trading categories;
• and
• updating said shared catalog with said list of available items, said at least one characteristic of each of said plurality of available items and said trading category of each of said plurality of websites.

A system of constructing a shared catalog, comprising:

• a program store storing a code;
• at least one processor of at least one server hosting a shared catalog service coupled to said program store for executing said stored code, said code comprising;
• code instructions to register each of a plurality of websites at said shared catalog service;
• code instructions to import a list of a plurality of available items offered by each of said plurality of websites;
• code instructions to import at least one characteristic of each of said plurality of available items;
• code instructions to classify said each website in one of a plurality of trading categories;
• and
• code instructions to update said shared catalog with said list of available items, said at least one characteristic of each of said plurality of available items and said trading category of said website.