When your choosing between the options:
Manual CPC bidding and letting Yahoo work towards a target CPA, what have you guys found that works best?
I am close to my CPA on manual bidding, but I am tempted to see what the AI can do if I just let it auto bid towards my CPA goal. At the same time I've never really trusted such algo's because they've always seem to spend widly and took too long to optimize.
Curious if anyone prefers the CPA goal over manual bidding.