Depends on whom you're trying to hide from, no?
Friends and family might have a hard time tracking your discrete secondary identities, but your ISP or facebook might see it very transparently.
Friends and family might have a hard time tracking your discrete secondary identities, but your ISP or facebook might see it very transparently.
It of course won't work well against police, who can look up the VPN provider, ask who's paying for it, and it's mostly enough to find you.
Forums: often the need for a separate identity arises from the need to join a particular forum frowned upon by your peers or superiors. Same for audience. That is, if you want a different persona and not a sock puppet to support your "main" persona.
Timing: this is also solvable if you want to.
For example, "okay, so you have one account exclusively post hard core right-wing arguments in the early morning, and then your second account posts left-wing arguments in the mid-afternoon."
At that point, what's the point? :-)
All these three personalities need not be connected in any way, nor need they contradict each other in what they say. They are just for different and unrelated facets of one's life.