Want to get the Opera browser without the annoying embedded ads? Usually, it'll cost you $39. But today, and today only, Opera Software is offering the full version for free. The giveaway is part of the program's 10th Birthday celebration. Whether you love Opera, hate it, or haven't even bothered to try it, now's your chance to give it a shot. Just hurry; at midnight (PT) tonight, the price goes back up.