Text ads seemed to work best, unless you got some kick ass creatives.
Create multiple campaigns. The first run for each ad campaign you create is where you will get the mega overage, 2nd runs or more on that same campaign tank down to only 300-500 clicks.
Countries that have worked well so far: USA, UK, South America
Okay things to point out. Email their support staff gbo-ops@inmobi.com to approve your
campaigns, they do get back to you within 24 hrs, excellent support.
Secondly, if direct linking, they will not be able to see the lp of the offer, this you have to email them a screenshot. I use bait and switch with them and have found using VERY creative lp's you couldn't run most places will give you top roi. Text ads, use your own tile image icons, they are 38x38.
The traffic is there, monetize it best you can. I've got enough things on my plate to bother running stuff this way so figure I share.