I think its about 50/50 on people being honest or not, recently i was in a hotel when i found the princely sum of 6 pound in a outside walkway, when i announced to the persons I was with that i was dropping it at reception 3 out of the group of 7 said i was ridiculous as the reception staff would only pocket it themselves, and i should keep it. Clearly the finders keepers rule is still going strong.