A recent post at the CSS-Edge Web development blog highlights how interactivity like click-to-call can help make your website “stickier.” In a strategy to go beyond simply matching consultants with projects, the freelance job site Elance has incorporated click-to-call to allow prospective providers and buyers to communicate without giving out a phone number. Not only does this facilitate communication, it also increases the value of the Elance site for its community — turning the site from something I visit when I need work to a the place where I do work.