Corporate logos on library websites?

I'm trying to discover if any libraries allow corporate
logos (of library supporters) on library homepages or other
library webpages. We used to have this conundrum solved by
our library foundation having their own separate web domain,
and we posted corporate logos on that website without much
worry. Now our library foundation is a link within our
domain, and they would like to post logos on on our
homepage, their pages, summer reading pages, other program
pages, basically all over the place. I have concerns about
so much mixture of commercial space with library space. Does
anyone have a written policy? Or even an unwritten one? I've
been looking around, and (1) I find no policies and (2) I
find no corporate logos on library websites. Hmmm. 
   
  Dawn 
   
  Dawn Work-MaKinne
  Des Moines Public Library
  Des Moines, Iowa
  deworkmakinnedesmoineslibrary.com
   
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