I have a question that might be a bit silly... but here it goes.
We have a website with cca 50,000 pageviews per day and have decided (for the first time) to sell our advertising space directly to some companies.
I noticed that many sites use cost per impression (CPI) when selling ads.
So let's say company buys 100,000 impressions at our site. Okey, I put their banner up in the rotating banner space and track impressions via database. Once it's over 100,000 I simply switch it off.
BUT - how do they know that we are being honest about these numbers? What if (hypothetically) I take the banner down when it reaches only 50,000 impressions.
Should I thus build some sort of feedback page where they could (via user name and password) check their progress in real time? Or is this too much of a hassle that might turn off the advertisers?
OR - must you link a banner directly from their site and they track in that manner?
I apologize if these questions are completely noobish :)