I just signed up about 6 hours ago, and all my text ads seem to be showing, but I am still getting no impressions for any of my 728x90 Image Ads. Also, I have created another campaign and have targetted specific websites, and there have been no impressions there either. Any ideas? Do they have to review the Image Ads (shouldn't they have done that by now, its been 6 hours) Also, does each site that I wanted to target have to personally approve my ad?? Look forward to your help! Thanks!
Image ads do have to be reviewed - and it normally takes a longer than 6 hours - 24 to 48 hours is more realistic. And they don't do it at weekends.