Wearing a signature doesn't mean you are here for just money. There's some noteworthy users on the forum who wear signatures, but their primary reason for being here is to discuss Bitcoin or related technology. Its unfair to assume that everyone who has a signature is here for the money as that simply isn't true.
Yeah its true that some users only register here to earn money through signature campaign or bounty campaign but chances of getting selected as a strong participant isn't so easy at least. To build up someone as a competitive participant its necessary to hold the mentality of helping others who are seeking for help here. So in my sense if someone continuing with a signature campaign then undoubtedly its a sign that he has that level of caliber which isn't so common.
(ID) rent! Because he will do signature and make money.