11.   But like other dot.com start-ups, Quepasa was having a hard time selling ads on the Internet.

12.   But it also sells ads at lower prices because cable reaches only around two-thirds of American households.

13.   But the directory itself does not sell ads, and he insists it never will.

14.   Cable operators are not allowed to sell local ads on superstations.

15.   Each will unveil a fully developed fall schedule in May, and try to sell ads for it, regardless of the strike threat.

16.   DoubleClick has been associated with selling online ads, even though that is only part of its business.

17.   Even with cable networks selling ads for bargain-basement prices, they say, you get what you pay for in viewership.

18.   Eventually, it may sell ads on the games themselves.

19.   For instance, salespeople for Car and Driver and Road and Track who have developed relationships with General Motors over the years also sell automobile ads for noncar titles.

20.   For example, Playboy sells ads that mimic a longtime editorial feature, the Playboy interview.