Money is money, and the more the better.
Honestly, you're getting money for this server, so I voted keep them. Yes, they're poorly organized and it takes forever to get anywhere with them, but even so, they still are paying quite a bit. Letting a site advertise here is not the same as endorsing the site, so, as long as the site is merely advertised- but not endorsed- I'm fine with it. After all, those ads are a lot nicer to see then the ones that are like "Find a Single Man/Woman in Your Area"
I agree.