We run a very large website on a particular sport that gets a lot of traffic. We have numerous banner ad opportunities and are currently selling the ad spots.
I have received two emails from two companies asking to advertise on very popular section, however, these two companies are in direct competition with each other. I won't name their names, but it would be like Coke emailing me to buy an ad spot, and then 15 minutes later, Pepsi emailing me to buy another ad spot on the same section.
If I ran both company's ads, then they would probably not like me very much since they wouldn't want to have their banner ads right next to their biggest competitor's ad. You see what I'm saying?
So I wanted to ask you guys what you would do in this case? First come, first serve? Is there a "rule of thumb" or web ad publisher "etiquette" in regards to this scenario? How would I go about telling Pepsi that 15 minutes earlier I got an email from Coke asking to advertise on the very section they wish to?
Any suggestions or guidance concerning this quandary is greatly appreciated! Thanks.