The only way that a user could take advantage of multiple accounts is that they would be able to get more faucet requests and potentially rain from chatting. I suppose this could affect investments if a user can successfully use the faucets to make enough to withdraw. Still, I think the chance of that happening is pretty low. Some people are concerned with a user tipping themselves their faucet wins, but the minimum tips are as high as the minimum withdraw limits, so I don't really see that as a problem either. The admins must feel like the extra faucets are a big enough concern (although I feel like most faucet claims end up getting lost by the players), unless I'm overlooking other ways a user could cheat the system by having multiple accounts.