The vulnerability of every account doesn't depend on the people behind them - it depends on the site itself
Is bitcointalk that vulnerable?
I guess it all depends on who is in control, not the site.
Edit: signing a massage on my with my address?? Does that help?
I believe anyone who can maintain their privacy well and surfing the internet safely will be more likely to stay safe with a strong password for their account. Signing messages also helps, I was told someone signing messages help you recover your account in case of hacking.