It this entices your cultural taste buds, then you might want to add the Add-Art extension to your own Firefox install.  Add-Art replaces advertising images on web pages with contemporary art from a curated database.  It is also worth making note of  that the install is bundled with the AdBlockPlus extension.

Worried about seeing the same art too many time?  The galleries are updated every two weeks and feature contemporary artists and curators.  You can pickup the addon on Mozilla’s site or their official site, Add-Art.org.