Some of my frustrations using Datspush :
1. Campaigns stopped automatically when you spend half your campaign's budget. E.g. If your campaign budget is $50, you won't get anymore traffic after the campaign spends $25 (this is confirmed by their support).
2. No notification for stopped campaigns. So you have to go in and check all the time.
3. UI : Full campaign name is not visible due to narrow column width. And this is not adjustable.
Traffic Quality :
Not too bad. They do convert. I do have a few profitable campaigns. I have not tested enough because the campaigns keep stopping on their own and I don't have time to monitor all the time.