I was told by people who know these things that as my traffic grew my conversions ratios would worsen and have been following my stats very closely.
Over the last few months traffic has risen by about 5% every month. But look at the conversions ratios over the last few weeks, weeks in which traffic has greatly increased.
September 03 to September 09 = 1-656
September 10 to September 16 = 1-481
September 17 to September 23 = 1-532
September 24 to September 30 = 1-426
October 01 to October 07 = 1-321. This was last week, let's hope this contnues.
Also what is nice is the form click ratios. They have improved over the last 5 weeks as well.