Ad Banners On Government Sites?

An Anonymous Coward asks: "Following in the as-of-yet legally uncontested footsteps of the City of Honolulu, it looks as if Fairfax County, Virginia might be adding ad banners to its official government site, according to this article on the Washington Post's website. In addition to first amendment concerns, current ad banners are designed to imitate GUI elements and could confuse a lot of citizens - what is Slashdot's take on the whole 'govads' concept?" While I understand that every city government appreciates an extra source of revenue, there are appropriate places for it, and inappropriate places. I feel a City Government's main Web site should be a banner-ad free zone. How do you feel?