For example, a bike shop creates a Page on Facebook and wants to place an ad to reach an audience of people in Atlanta interested in cycling. We determine whether someone fits in this audience based on, for example, whether they liked a Page about bikes. Then people in that audience could see the bike shop's ad.

You can see the “interests” assigned to you in your ad preferences and remove them if you want.

The bike shop can then see reports showing aggregated statistics about the audience seeing their ads and how their ads are performing. The reports would show statistics to the advertiser that, for example, most of the people who saw or clicked on their ad: