A "dollar off" coupon usually doesn't get my attention. It SHOULD in these "economic times." But the Kobo buck offer didn't work on a couple titles I wanted (not the "highlighted" titles), so I kinda ignore the one dollar coupons any more.
The fine folks at eReader.com - I registered their software for my Palm devices way back when - send out 5% and 10% "e-coupons" in email regularly. Just not exciting.
But Kobo's five buck offer? That gets my attention. Seems that any offer that is at or above the price of a gallon of gas gets my attention ... Now gas is right at three bucks a gallon in Southern California.
I do have to admit (since we are private here) that Kobo has been responsible for me reading more fiction the past few months than I had for YEARS beforehand. My nightstand has computer books and mags, biographies, and other very non-fiction titles. But I have "explored" and purchased more fiction - from "majors" and from Smashwords and independent authors - and I am glad that I have experienced what I have with the Kobo.