Another year, another Google-sponsored competition meant to identify the world's best programmers. People can now sign up to participate in Google Code Jam 2010, which will offer winners more than $10,000 in prize money. Here's a brief overview of the most important dates for anyone who's ready to dive in: registration began this afternoon. A 24-hour qualification round will take place on May 7th. Additional online rounds will take place May 22nd, May 23rd, June 5th,