Forum Moderators: skibum
Buttons and odd sized banners can perform nicely when placed in strategic positions.
Per impression ads are at an all-time low. You will be hard pressed to find a company willing to take on a new account with a decent CPM.
What you have left is CPC and CPA. I usually use whatever I can find that best fits my content, but targetted CPA has been the best for me.
No, get a publisher to add a nice button and a line or two of descriptive text/link on even a modestly popular page that relates to the subject. I know of a 4-wheeler tour that sponsors a page about some wild horses that roam in their area. The click-thru and conversion rates are high, the cost: $75/mo.
Also, sponsorship ads usually do not rotate.