The social network leader will venture beyond the thumbs-up with a test starting Friday for residents of Ireland and Spain. Facebook users, prepare to express yourselves Starting Friday, the world's largest social network will begin a test in which people get a much fuller range of responses than just the iconic thumbs-up "like." The feature, dubbed Reactions, will offer icons to express love, laughter, happiness, shock, sadness and anger, a company representative said Thursday. To add a reaction, testers on mobile devices will long-press the "like" button while PC users will hover over it. An array of options will then pop up. A post will note the number of each reactions received. Reactions won't immediately be tested on all Facebook users. The company will begin real-world testing of the feature only in Ireland and Spain. Facebook's new Reactions feature offers options beyond the "like" button. Facebook The change may seem sup...