Rapportive was a phenomenal extension for Gmail that gave a lot of "meat" to the contact, i.e. extra information that was displayed in the sidebar. When it was adopted by LineDIN, it lost its character and many people are still looking for it today. But it won't be like that for much longer. The start-up company FullContact has developed a new Gmail extension for Chrome, a kind of Rapportive 2.0, which provides the contact's job title, location, social profiles, photos,...
When we start the Chrome browser or open a new tab, we naturally open a blank page with the most frequently visited web pages. The entry page or the new tab are a kind of tabuli rasi, a shell without content, which serve no purpose for most people, except that they are "springboards". No one steps here because there is nothing to see. But Chrome offers a bunch of extensions that populate the tab with content.