“Over the course of her study, she found measurable trends towards openness to counter-attitudinal ideas just by switching the “like” or “recommend” button with “respect.” It became clear that people were much more likely to click on opposing view points with the “respect” button in place, and in fact, it lead to more interaction in the comments section in general. For example, in a comments section with eight comments, people clicked “recommend” an average of 1.5 times, while they clicked “respect” an average of 1.8 times. “You wouldn’t like a comment that held a totally different view than your own, and I understand why,” she says. “It sounds like you support of it and approve and agree with it.” Respect, on the other hand, is more neutral and doesn’t carry connotations of concurrence. Websites like the Huffington Post and Tampa Bay Times are toying with using positive phrasing like “amazing” or “inspiring” on their buttons. And while those words skirt the direct affirmation of “like”,” they do little to spread the idea of respectfully disagreeing.”

– http://www.wired.com/design/2013/09/can-you-design-a-website-to-encourage-readers-to-consider-a-different-point-of-view/