Are Banner ads acceptable on licensed databases

[GenAnnual at aol.com]

Colleagues,
I need your opinion. An online database vendor has asked me if librarians
would accept or object to their placing banner ads, visible to library
patrons, on licensed databases hosted by their company?

What would be your reaction? Not care; accepting; would cancel the
subscription or? 
I take it that they feel they could charge lower fees if they had the
additional revenue from the ads. 

What's your feeling?