In celebration of its 10th anniversary, Opera Software is offering free registrations for its popular Web browser Opera. Free registration codes are available until midnight CET (GMT +1) today. The company is also offering an Anniversary Competition. “Share your birthday wishes with Opera and win a prize! Use your imagination – the more creative the better. Write a poem, haiku, a story, draw a picture or just something fun. Our 100 favorite submissions will be shared with the Opera community and the winners will receive a super-cool Opera t-shirt!” Editor’s Note: Use Opera to access this link for the free codes. [Thanks to MacMinute reader Joshua Anderson for this news tip.]