Effective Measure does more than just the survey; they also track visitor stats. Any website that is a member of the DMMA will be using Effective Measure to measure their site traffic and will be using those statistics for the purposes of marketing the websites to advertisers and measuring their performance in the SA internet space.
If you guys fill out the survey and keep the third party cookies from Effective Measure (in theory) this means the survey shouldn't be bugging you again.
The survey helps SA marketers to figure out which demographics and websites they will find best suited to advertise their products, as well as provides some interesting insights into the internet landscape of South Africa.
I know adverts are annoying, but this is how published content on the internet remains 'free', so to speak.
While Google Analytics provides a similar statistic tracking service, they do it slightly differently to Effective Measure.
Effective Measure is the yardstick by which all South African DMMA registered websites are measured, and how they are compared.
As Tinman pointed out, if you block Effective Measure, you are essentially invisible to us ;_; We do so love to see how well the site is growing and if we're pleasing our readership
I will merge with the other thread.