Some of my campaigns are aimed at getting registrations or email address. A little bit more difficult to put an ROI on it.
Not alot here, we look for memberships to get started from the links but this rarely happens - so just trying to be happy with the clicks alone.
My ROI varies from 40% to 300% but that's most of the time with affiliate products in the range of $47-$97. I must admit that I even loose money on Adwords but its rarety & most of the time while starting a new campaign...when the campaign is in the initial stage & not tweaked or optimised
Most campaigns are not successful and ditched quite quickly - but those that are vary from 20% to 100%+
Usually at 200% - 300% ROI. But this month with Yahoo smart pricing on my revenue side my adwords ROI has dropped to around 200%. I generally hear from my collegues that CPA & some affiliate offers make far more ROI with the right products & markets. And a LOT better than most bricks and mortar businesses.