Eh. If you use the same browser, Google can just associate the two accounts. Also, it's more of a hassle than just saying "forget it."
It's entirely possible that if I went to a non-G+ page, I could be convinced to drop $60-100 on a whim. If you make me do stupid little things like remember credentials for a "throw-away account," then you lose the chance to capitalize on that impulse.
It's entirely possible that if I went to a non-G+ page, I could be convinced to drop $60-100 on a whim. If you make me do stupid little things like remember credentials for a "throw-away account," then you lose the chance to capitalize on that impulse.