Bottom line, apart from remembering I might have a monthly subscription, there is no financial incentive for me to consider a yearly subscription. The difference at the moment is a year is 40 cents cheaper. On top of this, some people may not wish to commit to a whole year. I play Eve Online and for increased subscription time > 3 months > 6 months > 12 months there is a percentage cost reduction on the more time I buy. Please see attached. You may wish to consider the above/below as a better incentive for increased revenue.