There's a lot of ads featuring celebrity endorsers...  ...Peter Daboll of AdvertisingAge, having celebrity endorsements do not pay: Over the course of last year, time an...  ...ump, we found that with rare exception, celebrity endorsements were largely ineffective and failed to yield the...

Some product endorsements and celebrities go well together - but these didn...  ...Simpson and HertzPerhaps the worst ever celebrity endorsement was car rental company Hertz's choice for a spoke...  ...d), Bryant's reputation was tarnished and he lost endorsement contracts...