Login to the back-end and you'll see a list of things to do, including a link to all the banners and advertisers that are pending your approval.
Once you take action on your to-do list, an automated e-mail will be sent to the advertiser to let them know you've taken action. An e-mail is sent to them when you:
- Approve a banner.
- Approve a campaign.
- Approve an advertiser.