Forum Moderators: DixonJones
Larryn solved your problem earlier. You host the banner that the other site displays. From the impressions of that banner you know exactly the traffic that the other site is generating to those pages.
Alexa wouldn't be an option for me to measure traffic unless it was one of the 100 most popular sites on the web, and I don't think we are talking that popular!
So, do as Larryn suggested and host the banner/Ad, then measure the results. If your partner is fibbing about their traffic you will catch them within a few days!
p.s.: You're almost never going to get a perfect 1:1 50/50 trade. Most of the time it's always 90/10 one way or the other, don't look a gift-horse in the mouth too hard, commercial banner exchanges are 2:1 but it feels more like 1000:1
One thing that many people do is start with a very short term trial - or have a very quick get out clause in these sorts of situations, so that any con doesn't get very far.
Then of course - banners still don't anyway IMHO :)
Or if you don't trust the numbers they are giving you, ask if you can look at their traffic reports directly and get a traffic expert to take a look with you. Somebody knowledgeable about traffic reporting will be able to tell whether they are fudging the numbers or not. There are about 10 good ways to end up with inflated numbers in traffic reports and almost all of them can be detected by somebody who knows what they are looking at.
Lower traffic sties can deliver far higher conversions if they send very targeted traffic as opposed to sites that deliver tons of untargeted traffic or "browsers" instead of buyers.
If they charge on a CPM basis does it really matter how much traffic they send since you will only be charged for impressions or is this an ad buy with an upfront fee?
Also, do you see the same advertisers on this site all the time? If so then you know it must be effective or they wouldn't keep paying for the traffic.