I haven't, and I don't doubt that's true (at least in many cases; I've learned not to underestimate the chances of big companies ending up running scams either).
I've personally dealt mostly with the other end - the individuals and small agencies - and what I saw revealed total lack of necessary competences for the reports to be corresponding to reality. Perhaps it's understandable - after all, people who have the required knowledge likely end up working for big advertisers, or in entirely different fields. But small business owners don't pick these big advertising companies either.
I've personally dealt mostly with the other end - the individuals and small agencies - and what I saw revealed total lack of necessary competences for the reports to be corresponding to reality. Perhaps it's understandable - after all, people who have the required knowledge likely end up working for big advertisers, or in entirely different fields. But small business owners don't pick these big advertising companies either.