Other investors have stayed away from investing these apps because they feel these apps bring more harm than good. There are several of sources to generate revenue for anonymous social media sites. One source of revenue is by implementing programs such as a premium membership or a gift-exchanging program. Another source of revenue is by merchandising goods and specific usernames to users. In addition, sites such as FMyLife, have implemented a policy where the anonymous site will receive 50% of profit from apps that makes money off it. In terms of advertisements, some anonymous sites have had troubles implementing or attracting them. There are several reasons for this problem. Anonymous sites, such as 4chan, have received few advertisement offers due to some of the contents it generates. Other anonymous sites, such as Reddit, have been cautious in implementing them in order to maintain their user base. Despite the lack of advertisements on certain anonymous sites, there are still anonymous sites, such as SocialNumber, that support the idea.