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Anyone who saw your ad and was interested enough to look up your site would usually be a well-motivated prospect for whatever you were promoting. Even if the quantity of traffic you got from a classified ad seemed low, I expect the quality would be pretty good.
Let us know how it goes.
Much sooner focus resources on the "online" crowd since half a billion are already there.
Newspapers are good for press releases though!
When your news, it's free as well and people interested check you out, probably more than a classified ad I reckon!
I would guess that discount items "priced for quick turn-around" may be quiet suited for the upsell, since many people look for deals in classifieds.