Hi there,
There are lots of affiliate programs that have articles to use. One weakness here is that these articles/ads are all over the net.
You could practically join any affiliate program, and then write a few articles yourself. This way you could provide good info on the program/product, and in turn include text links within the articles. This is bound to increase click thru's in my opinion.
It does take a bit of work, but it will pay off in the long run.
Best wishes,
Fred
A Great Affiliate Program