[Web4lib] Corporate logos on library websites?

[Dawn Work MaKinne]

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
  deworkmakinne at desmoineslibrary.com