1. A method of defining customization for electronic visual content retrieved over an electronic connection, comprising: retrieving electronic visual content from a remote server to a local client, through an intermediary apparatus; locally editing the electronic visual content at the local client by a user using a WYSIWYG editor, wherein said editor is a standard software used for displaying of content and wherein said editing does not require installation of software requiring user authorization and does not change content stored in said remote server; detecting changes in said electronic visual content caused by said editing, after said editing is performed; automatically generating at least one customization definition based on said changes, said customization definition suitable for automatic applying to said electronic visual content; and modifying by said intermediary apparatus data provided at a later time according to the at least one customization definition for a visual presentation thereof at a plurality of local clients to a plurality of end users; wherein the intermediary apparatus supports the editing of said electronic visual content at the local client.
1. A method of defining customization for electronic visual content retrieved over an electronic connection, comprising: retrieving electronic visual content from a remote server to a local client, through an intermediary apparatus; locally editing the electronic visual content at the local client by a user using a WYSIWYG editor, wherein said editor is a standard software used for displaying of content and wherein said editing does not require installation of software requiring user authorization and does not change content stored in said remote server; detecting changes in said electronic visual content caused by said editing, after said editing is performed; automatically generating at least one customization definition based on said changes, said customization definition suitable for automatic applying to said electronic visual content; and modifying by said intermediary apparatus data provided at a later time according to the at least one customization definition for a visual presentation thereof at a plurality of local clients to a plurality of end users; wherein the intermediary apparatus supports the editing of said electronic visual content at the local client. 50. A method according to claim 1 , wherein the automatically generating at least one customization definition based on said changes is performed by said intermediary apparatus in response to the detection of changes to the electronic visual content.