Earlier today, Google announced some changes to its Google Apps accounts. First the bad news: business with more than 10 users now have to sign up for a paid Google Apps for Business account. Until now, the limit was 50 users. The good news: business users won’t have to prepay for a whole year anymore. Google’s new flexible plan gives company’s the option to pay $5 per month per user without any contractual commitments. Google will continue to offer annual plans for $50 per year.