A lot of these companies (PayPal, Google Wallet, etc) can notice weird transactions, such as the notes in the emails, the number of transactions, etc. I'm sure there are ways around it (not advertising on Twitter, not receiving many payments, etc) but if they do catch you and you've transferred money to a personal account, they can shut down your personal account too. Other models have had their family members accounts shut down because they'd transferred money to them from a personal account that had received money from a camming account. Not a fun convo to have with your mom, haha.
Either way it's important to remember you're breaking the sites rules and so are liable to lose your account (including balance) at any time. It's discouraged for a reason, because it would be shitty to have some send you money and then it gets lost between you so you don't get paid and he doesn't get refunded.