We have very old, established sites with original content and great traffic demographics and steady SE traffc/PR -- ad have for years.
We offer navtabs, contextual links, footer links, full page advertorials, standard hardlinks, blog posts, etc.
Leave your contact info or email me directly at
zapusto [at] gmail [dot] com
ETA: Two other really honest people to deal with, and who both have great sites, are Devin (
[email protected]) or Marcy (
[email protected]).