In a crowded online advertising world, getting your product noticed may seem like an uphill battle. Therefore, it is important to notice when your climb loses its momentum. So how long can you ‘ride’ the same campaign, and when should you make a change?
To see how campaigns fare after their launch, MediaMind Research analyzed the performance of hundreds of campaigns through the first three months of the each campaign’s lifetime. The premise was that an average campaign length is three months and that this period of time is long enough to assess any trends in the performance curve.
The analysis examined the performance of hundreds of Rich Media campaigns, which started during Q3 and Q4 2010. For each campaign, MediaMind looked at the performance during the first three months of the campaign.
Performance was measured using Dwell Rate and Average Dwell Time, engagement metrics that measure the interest of users in the content of the banner. Dwell Rate measures the numbers of users that intentionally engaged with the banner and Average Dwell Duration measures how long they stay engaged.

Surprisingly, campaigns can go on for quite a long time without losing effectiveness. The results show that both Dwell Rate and Dwell Time remained pretty similar throughout the three months that were examined. Nevertheless, the first month showed a slightly higher Dwell Rate than the results during the second and third months. Dwell Average Duration, on the other hand, was 6 seconds higher in the second month, as compared to the first month, and maintained most of its lift during the third month.
It appears that advertisers do not need to worry about campaign and creative fatigue. Results remain relatively steady throughout the three months that were examined, contrary to conventional wisdom that campaigns lose momentum soon after their launch.
Furthermore, there seems to be no rule of thumb on what should be the optimal campaign length. Each advertiser can make his own judgment that should take into consideration the audience, campaign objectives and budget. Most importantly, it’s not the campaign duration, but the sophistication. Great creatives can go a long way, and keep users engaged for a long time… even three months.