1) those are not advertisers, those are direct mailing etc., outfits. I think they're annoying too. I don't use them. If a client suggests using them, I suggest they find a new agency. I suggest you write a note to the CEO and discontinue your association with the brand. they pay attention to that.
2) might I suggest 'site:.edu'
3) it's not a fear, a critical mass of users won't pay for content.