There is no direct connection between ad serving technology, like that provided by iPromote, and a high website bounce rate. It is important to understand that an effective ad campaign relies on more than just a well-designed and well-served media kit. Investigate whether or not a high bounce rate matters to the advertiser's bottom line.
Unclear landing page
The landing page an ad redirects to might not effectively communicate a message or it might otherwise be ineffective.
Audit the landing page and make sure that it follows web design best practices. If a good ad leads to a bad page, the advertiser is unlikely to realize the benefits of online display advertising.
Effective landing page
That's right: An effective landing page could explain a high bounce rate.
If users find what they need on a landing page and leave before going to another page on the same site, there is no way to measure time on page and bounce rate is high. This is even true if users spend a long time on a landing page.
An advertiser can collect metrics that support the idea that the landing page is in fact very effective.
For example, the advertiser can provide a coupon code on the page or otherwise solicit feedback about the page to gauge its effectiveness. Or they can consider a redesign that starts with a landing page, but then leads users down a pipeline of other pages so that metrics can be collected.
Mismatch between ad and page
A campaign's display ad might not complement the landing page it links to.
If a user expects one service or product but finds another, they might leave a website without further action.
Compare display ads to landing pages to see if they complement one another. Alter the design of ads to better complement the landing page purpose or appearance, or link to more appropriate landing pages.
For example, if an ad advertises brake repair, but the its landing page promotes auto towing, the advertiser might be losing traffic (and business).
Inappropriate ad source
Some site visitors might be coming from the wrong place(s). In other words, if ads display on the wrong kind of website, users coming to a site might not be who the advertiser is actually trying to attract.
Investigate where viewers are coming from to see if visitors might be expecting one thing when they click an ad but are landing on something they didn't expect.