Another suggestion I'd like to make is to think of some way to target IP.Board members based on their interests so you can send bulk mail which would be more relevant:
one way we can find out which ads can be more relevant to a particular member is just to answer a simple survey if you can call it where they can TICK their interests on a list and the bulk mail you send have to be related to a ticked topic. if not or nothing is ticked - bulk mail is sent.
so basically as an admin you set up your bulk mail topics/categories/interest groups in ACP and you save them. members can tick or untick their interests in their profile settings. something like that.
I've seen newsletter softwares do that and that is very convenient. because right now we can only filter by posts, activity, groups and thats it.
sorry for double-posting but I cannot risk IPS not seeing this topic.