This is kind of frustrating but recently I've found that I'm incapable of predicting the winner of some split tests.
The other day, 17% of recipients clicked a link on the version I thought would win -vs- 33% of the version I didn't think had a chance.
Just shows how important this is. If you aren't using it, consider it! It's fun (but oh so frustrating!)
I guess there would be no point in split testing if we could always predict which would have the better results!
Haha, Kris2 - I hear you. You think that folks like myself who use the product pretty much every day would have better predictive skills, but no. I can never pick the winner. Good thing I'm not wagering money! ;)