It often feels crude and awkward, despite advances in technology, psychology and design. However, targeted advertising can be effective for selling products. Ad targeting removes the aspect of advertising that makes it ineffective: disinterest. Most people who notice a fixed ad won't be interested in what the advertiser is trying to sell. On the contrary, every person who sees a targeted ad will be at least a little interested in it. By pursuing specific groups, companies can reach a broader target audience, rather than placing a fixed ad and hoping that everyone interested notices it