Becoming a millionaire (without ever getting a job)

With a sim in the Pleasure aspiration (secondary is sufficient) and a high cooking skill I found that writing restaurant guides is pretty broken.

Robotics could be exploited if your sim uses her robots to run the home business and/or crafting (depending on what badges they initialize with). From there it should snowball. On the other hand, if that sim worked hard to get to that point, maybe it's not an exploit, after all?