Hey xaz,
We are in the middle of making some changes to optimize our site for better conversions both inside and out...
If you checkout our join page, it now includes a mini-profile so you have probably seen your free conversion rise a lot in the past few days (as free signups are credited when a profile gets created, which it now is at the join stage not later).
Thus, your paid:free ratio might look worse at the moment, but I think if you compare the actual number of sales not ratios, it shouldn't have dropped.
I'd urge you to talk with your rep on Monday to see if they can spot a problem or reason if your sales have gone down. Another thing I recommend is having your own "partner site" - stats show partners who customize their sites are converting a decent amount better than the IwantU site itself
